What are the misunderstandings to avoid when planting autumn and winter Chinese cabbage?

In the process of planting vegetables, fertilization after the fixed value indicates that this is top dressing. There are many kinds of fertilizers, and the amount of fertilizer at the seedling stage must also be reduced, and it should also be based on the situation of the bottom fertilizer.

In general, the fertilization management of vegetables at the seedling stage is similar. After 7 days of planting, the seedlings can be fertilized with water. At this time, it is not allowed to use a large number of elements, under normal circumstances, you can rush amino acids, humic acids, algae extract, microbial agents and other rooting fertilizers to promote root growth.

Generally, when planting vegetables, a certain amount of organic fertilizer and a small amount of compound fertilizer will be added when using base fertilizer. For planting with over-used base fertilizer, it is generally best to start using a large number of elements after flowering and fruit set. If you do not use base fertilizer for planting, you can apply a small amount of balanced macro-element water-soluble fertilizer before flowering, 3-5 kg per acre, which can provide sufficient nutrients for the flowering period.

I would like to share my views on the question of how much fertilizer can be applied for a few days when vegetables are planted. First of all, vegetables should be planted with sufficient organic fertilizer, biological bacteria, an appropriate amount of macronutrients and medium and trace element fertilizers. After planting, the first question we face is how to slow down the seedlings quickly.

Generally, in a suitable growth environment, it takes 6-7 days for new roots to begin to grow. At this time, some humic acid and amino acid fertilizers can be applied to promote the establishment of a strong root system.

In addition, the products developed by various enterprises to promote the development of the root system can also be used, the purpose is to promote the roots, to achieve the purpose of deep roots and leaves. Planting vegetables before the bottom fertilizer more, less different, fertilizer is different, after planting topdressing time is different, the general base fertilizer use fermented organic fertilizer is the best, will not have the root burning phenomenon of vegetables, can also play a role in improving soil structure, if the base fertilizer before planting is not sufficient, after planting should be carried out in time to carry out an appropriate amount of topdressing, to improve soil fertility, promote the root system to absorb fast and slow seedlings.

Top dressing according to the planting method, such as flat furrow planting, ridge planting, leafy vegetables flat furrow density is relatively large, sowing should be top-applied water-soluble fertilizer, water, fertilizer at the same time the effect is better, ridge planting density is small can be carried out hole topdressing.

Different crops, different varieties, its slow seedling period is not the same, in the slow seedling period, the seedlings are relatively weak, especially some crops will cut the leaves and roots when planting, need to wait for the wound to heal, so it is not suitable for top dressing and watering in the slow seedling period, and generally have to wait for the supplement of fertilizer and water after the slow seedling period, that is, apply "slow seedling fertilizer" and water "slow seedling water".

Excessive nitrogen fertilizer application: At present, the soil nitrogen content of vegetable fields in most areas is high, and the nitrogen fertilizer application rate is too large, which not only causes the cabbage to have a poor heart, but also has a lot of water content in the leaves, and it is not easy to store after harvest and is easy to rot. Insufficient application of calcium-containing fertilizers:

When Chinese cabbage is applied with basal fertilizer, superphosphate can be added to supplement the calcium nutrition of Chinese cabbage, which can prevent the occurrence of "dry heartburn" disease of Chinese cabbage.

It is necessary to avoid 1, excessive application of nitrogen fertilizer 2, insufficient application of calcium-containing fertilizer 3, excessive application of nitrate nitrogen fertilizer 4, watering immediately after urea application 5, repeated and excessive application of ammonium sulfate 6, application of ammonium bicarbonate 7 during drought and water shortage period, and excessive application of phosphorus fertilizer.

The temperature in autumn and winter decreases, and when fertilizing Chinese cabbage, we should pay attention to less potassium fertilizer, which will make Chinese cabbage leaves whiter, and we should also pay attention not to continue fertilization, but also to intermittent fertilization to avoid excessive nutrient absorption by crops.

1. Germination period. In general, there is no need to fertilize during the germination period, so as not to unfavorable seed germination, and may even lead to seed non-germination.

2. Seedling stage. Fertilization at the seedling stage is generally fertilized twice, the first time in the seedling growth of 3-4 true leaves stage, on both sides of the seedling per mu ammonium sulfate 8-10 kg, fertilization should be watered in time, the second time in the seedling period, in the cabbage ridge on both sides of the ditch to apply about 15 kg of ammonium sulfate.

3. The rosette period. At this time, fertilization is still to fertilize in the ditch on both sides of the cabbage ridge, generally 10 kg of high calcium phosphate and 20 kg of ammonium sulfate per mu, and soil cultivation and watering.

4. Ball setting period. Cabbage balling time is longer, this is an important period for the formation of high-quality cabbage, fertilization in the middle of balling, about 15 kg of ammonium sulfate per mu with water.

Practice has proved that the production of 1000 kg of fresh vegetables requires about 2 kg of pure nitrogen from the soil, and the nitrogen required by Chinese cabbage can come from soil, organic fertilizer and chemical fertilizer.

Under the condition of applying a large amount of organic fertilizer, the application rate of chemical nitrogen fertilizer should be appropriately reduced. The application of appropriate nitrogen fertilizer is conducive to photosynthesis and is the key to achieving high yield of Chinese cabbage. In some remote areas, there may be insufficient nitrogen fertilizer, thin leaves and light color, coarse and hard tissue, which not only affects the yield, but also the quality is not good.

However, the actual amount of nitrogen application in production in most areas exceeds the demand, and excessive application of nitrogen fertilizer not only has thick outer leaves of Chinese cabbage, poor heart, low yield and quality, but also has a large water content in the leaves, which is not resistant to storage after harvest, easy to rot, and is susceptible to pests and diseases in the late growth stage. Therefore, in addition to the appropriate amount, the period of nitrogen fertilizer use is also important.

During the whole growth period of Chinese cabbage, the nitrogen uptake at different stages was different. The seedling stage is very small, accounting for about 2% of the total. The nitrogen uptake increased to about 28% at the rosette stage, and the nitrogen uptake was the largest at the core stage, accounting for about 70% of the total, so the application of nitrogen fertilizer should be light before and heavy after.

The growth period of Chinese cabbage is long, and sufficient basal fertilizer should be applied for fertilization management. In the old vegetable field, the soil fertility is high, and the appropriate amount of organic fertilizer can be applied, and the compound fertilizer is mainly phosphorus and potassium. In the new vegetable field, it is necessary to reapply organic fertilizer, with the application of ternary compound fertilizer, and also pay attention to the mixed application of organic fertilizer and potassium fertilizer.

In terms of top dressing application, Chinese cabbage from the seedling stage to the cluster stage to control water and fertilizer (mainly nitrogen control), in addition to special circumstances to apply seedling fertilizer, generally in the rosette stage to squat seedlings, one to the ground assimilation organs (outer leaves) to grow strong, two to promote root growth and rooting, for the later rapid growth and a large amount of nutrient absorption to lay the foundation. The first top dressing is mastered at the critical time of the rosette stage. It is advisable to apply fast-acting nitrogen and potassium fertilizers, and irrigate at the same time, and enter the core stage after water and fertilizer.

The second topdressing of Chinese cabbage is in the early and middle stages of centering, mainly topdressing nitrogen fertilizer, up to two times, to control the amount of nitrogen. Stop applying nitrogen fertilizer at the later stage of the wrapping.

It is necessary to increase the proportion of phosphorus and potassium fertilizers.

The addition of potassium fertilizer to basal fertilizer and top dressing is conducive to the core coating and disease resistance of Chinese cabbage. Attention should be paid to the application of potassium fertilizer in the top dressing in the early stage of the heart, and if the Chinese cabbage in the hearting stage is not sufficient in phosphorus and potassium fertilizer, it is not easy to ball. At present, the application of potassium fertilizer is often neglected in vegetable production.

The appropriate potassium application rate is generally 12 kg of potassium chloride or 16 kg of potassium sulfide per mu. The application method is best divided into basal fertilizer and top dressing two applications, the base fertilizer is applied to the bottom of the hole when planting, and the top dressing is carried out together with nitrogen fertilizer and irrigation after squatting seedlings at the end of the rosette stage.

It is necessary to pay attention to the ** of calcium.

The application of superphosphate in the base fertilizer supplements the nutrition of calcium, which is beneficial to prevent the occurrence of "dry heartburn" disease of Chinese cabbage. Chinese cabbage is a calcium-loving crop, and calcium deficiency, especially excessive nitrogen application, is easy to cause "dry heartburn" disease. Nitrogen fertilizer control and calcium supplementation are the core technologies for preventing "dry heartburn" disease in Chinese cabbage.

In addition to soil application of calcium-containing fertilizer, the method of foliar supplementation can also be adopted, spraying calcium chloride or calcium nitrate.

How to grow Chinese cabbage in autumn? With the right method, the yield is increased by 70%, and the watering and fertilization skills are shared during the core wrapping period.

What is the best fertilization method is the fusion of soil fertilizer and chemical fertilizer, such as if there is phosphorus fertilizer, use phosphate fertilizer with soybean cake, or fried soybeans, manure buns, this is a very good soil fertilizer, and fertilizer can be applied together, and the water in the middle and late stages will follow closely to ensure that when it comes to selling, the top of the vegetable tree is firm and big, and it is very delicious. On the basis of applying foot fertilizer, the general old vegetable garden, the soil layer fertilizer rate is higher, and the organic fertilizer used can be appropriate and <>

If it is on a new vegetable field, the fertilizer efficiency of the soil will be insufficient, and we should reapply organic fertilizer or phosphate fertilizer mixture as base fertilizer. Generally, at the seedling promotion stage, we fertilize the Chinese cabbage after the budding stage. Because the planted Chinese cabbage is inevitably uneven, it is dense and needs to be solved by supplementing seedlings.

At the end of seedling replenishment, top dressing should be carried out immediately to promote seedling fertilizer. It is best to maintain the soft soil layer before fertilization, and promote the seedling fertilizer father to generally use urea watering. Here's how:

During irrigation, water is sprinkled into the inlet of the running water and poured into the cabbage ditch.

The advantage of this is that it does not damage the roots, and urea can be effectively and quickly melted to make the fertilizer effective. Until the leaves of the Chinese cabbage grow out, the main stem grows to about ten centimeters, in the case of insufficient bottom fertilizer or no fertilizer, it can be a small amount of seedling fertilizer, an acre of land can use about six kg of urea, to promote the growth of Chinese cabbage, fertilization should be the key to apply seedlings, zombie seedlings, to promote its production of vigorous seedlings. The second half of the chemical fertilizer, which belongs to fertilization.

The effect of fertilization is directly related to the production and quality of cabbage during the picking period.

Nitrogen fertilizer can be used for fertilization, the amount of nitrogen fertilizer per mu is calculated according to 50 catties, nitrogen fertilizer is increased with watering, watering 2 times with nitrogen fertilizer, and the interval of watering is more than 7-10 days. What is the best fertilization method is the fusion of soil fertilizer and chemical fertilizer, such as if there is phosphorus fertilizer, use phosphate fertilizer with soybean cake, or fried soybeans, manure buns, this is a very good soil fertilizer, and fertilizer can be applied together, and the water in the middle and late stages will follow closely to ensure that when it comes to selling, the top of the vegetable tree is firm and big, and it is very delicious.

When planting cabbage and fertilizing, you must pay attention to the basic fertilizer is enough, when the cabbage grows leaves, the rhizome reaches 10 cm, you can fertilize a small amount to promote its growth.

How to fertilize:1According to soil fertility conditions and target yield, the amount of nitrogen, phosphorus and potassium fertilizer should be optimized.

2.Base fertilizer is the main fertilizer, and base fertilizer is combined with top dressing. Top dressing is mainly nitrogen and potassium fertilizer, and trace elements are appropriately supplemented.

Note: After the rosette stage, the top dressing management should be strengthened, and the top dressing should be increased once in the early stage of the heart, and the nitrogen top dressing should not be used two weeks before harvesting.

Before planting cabbage, it is necessary to apply enough basal fertilizer in the soil, basal fertilizer can improve the fertilizer of the soil, basal fertilizer can choose to apply farmhouse fertilizer, the specific amount of fertilizer should be determined according to the planting area, usually each mu needs about 4800 to 5000 kg of basal fertilizer, and then with an appropriate amount of compound fertilizer.

Chinese cabbage is a high-yielding vegetable. In the north, for example, sowing generally begins in July and August. In the past two days, many people began to consult the planting technology of Chinese cabbage, and many people asked how to fertilize Chinese cabbage.

Let's talk about the scientific fertilization method of Chinese cabbage first. Due to the different needs and ratios of nitrogen, phosphorus and potassium in the whole growth process of Chinese cabbage, the proportion of nutrient absorption at seedling stage was small, and the absorption of nitrogen, phosphorus and potassium was less than 1% of the total absorption, and the nutrient demand of Chinese cabbage at rosette stage gradually increased, accounting for about 203,360% of the total, and the nutrient absorption at heading stage was the highest, accounting for about 80% of the total. From the germination stage to the rosette stage, nitrogen absorption is the highest, followed by potassium, and phosphorus is the least.

Potassium is absorbed most during the nodulation phase, followed by nitrogen and phosphorus. According to this law, the following fertilization can be carried out:1.

The base fertilizer should be sufficient.

Generally, the amount of fertilizer per mu of land is about 5000 kg of high-quality rotted farmhouse fertilizer and 40-50 kg of compound fertilizer. It can be ridged and planted. 2.

Seedling fertilizer should be applied skillfully. Generally speaking, the effect of basal fertilizer is slow, and a small amount of available nitrogen fertilizer should be applied as seedling fertilizer. At this point, the first refinement can be made.

After seedling, 5-8 kg of ammonium sulfate per mu was used to promote the growth of seedlings. It should be noted that in order to balance the growth of seedlings, we should focus on the application of small and weak seedlings to promote their formation of strong seedlings, rather than topdressing seedlings that have been applied plantar fertilizer. The three Chinese cabbages are forced to apply "fertilizer" at the rosette stage, and the growth rate and amount are relatively large, so sufficient fertilizer and water need to be supplied.

High-nitrogen fertilizer should be applied as soon as possible, and a small amount of phosphorus and potassium fertilizer should be applied to meet the nutritional requirements of the rapid growth of Chinese cabbage at the rosette stage.

During this period, it is recommended to apply 15-20 kg of urea and 10 kg of potassium sulfate per mu, and water two days after fertilization to ensure that the fertilizer meets the growth needs of Chinese cabbage to the greatest extent. In the later stage, if the rosette grows too fast, dwarf seedlings need to be cultivated to prevent excessive growth of rosette leaves and delay ball setting. 4.

Top dressing should be sufficient at the heading stage. The heading stage is the formation period of the economic yield of Chinese cabbage, and the growth is large, so it is also the stage with the largest demand for water and fertilizer. One-time topdressing can be used in the nodulation stage, which can also be divided into early and middle stages, with the early stage as the main stage.

In the early and middle stages of nodulation, combined with watering, 15-20 kg of ammonium nitrate and 10-15 kg of potassium sulfate per mu were applied, and 1% superphosphate leaching solution could be sprayed on the foliar surface during the core covering period to promote nodulation and prevent dry burning. The above is the scientific fertilization technology of Chinese cabbage during the whole growth period.

I think we should choose phosphate and nitrogen fertilizers, and we should also loosen the soil, and we also need to water them in time, and we also need to keep the leaves healthy and observe the growth and development of Chinese cabbage at any time.

Fertilization should be carried out before planting, and continuous irrigation should be carried out during the planting process, so as to ensure that the Chinese cabbage grows very well in this process and gets more yield.