How to fertilize lettuce to make it highly productive?

In order to achieve the goal of high yield and high quality of lettuce, it is necessary to give sufficient nitrogen fertilizer and potassium fertilizer during the elongation and expansion of lettuce. Sufficient nutrition is satisfied** plays a key role in the expansion of lettuce. Therefore, reasonable and effective water and fertilizer management is an important measure for high yield and high quality of lettuce.

In this regard, according to his own planting experience, Liufang made a simple analysis of how to fertilize lettuce, which is introduced as follows.

We all know that lettuce is a vegetable with tender flesh and young stems, so it is best to choose a plot with easy irrigation and fertile soil. Most of the lettuce planted in our local area is transplanted, which is carried out at low temperature to promote germination before sowing, and the seedbed is kept moist after sowing and an appropriate amount of nutrient fertilizer is applied, so as to facilitate the normal growth and development of planting.

During the planting period, be careful not to let the age of the seedlings be too long, otherwise the phenomenon of rhizome cracks will easily occur in the later stage. During the period after warming seedlings, fertilizer should be mainly used with appropriate nitrogen fertilizer and reduce watering. Combined with tillage after planting, because fertilization, watering and rainfall are easy to cause soil compaction, so after planting and slow seedlings, it is necessary to combine fertilization and timely tillage, which is conducive to squatting seedlings, which helps to promote good root development, and young stems grow robustly without channeling tall and long.

In general, nitrogen fertilizer can be applied twice after the new roots of the plant have recovered.

During the period of vigorous plant growth, nitrogen and potassium fertilizers should be mainly applied at this stage.

In principle, nitrogen fertilizer should be heavy first and then light, and potassium fertilizer should be light first and then heavy, so that the carbohydrates in the plant can fully accumulate and facilitate the formation of lettuce expansion. Timely replenishment of potassium fertilizer and appropriate amount of nitrogen fertilizer is to ensure the normal growth and development of plants and improve the quality of vegetables. Of course, it is also possible to spray foliar fertilizer on the leaves of plants to help improve the quality of vegetables, so as to achieve the effect of high yield and income.

In the whole process of growth and development, lettuce needs fertilizer and water is very large. Therefore, it is necessary to keep the soil moist and moist during the growth period. Note that it is necessary to carry out top dressing at the lettuce rosette stage, that is, when the stem begins to swell, and apply nitrogen fertilizer and potassium fertilizer once in the early, middle and late stages of expansion.

At the same time, we should also pay attention to the topdressing of extra-root fertilizer, so as to improve the resistance of plants and crop quality.

Attention should be paid to fertilization in the whole growth process of lettuce, and scientific fertilizer should be combined with water management, so as to help improve the efficiency of fertilizer and water use.

The principle of fertilizer is mainly based on the combination of basal fertilizer and top dressing, and the top dressing needs to be mainly nitrogen fertilizer and appropriate amount of potassium fertilizer.

Finally, Liu Fang reminded that lettuce harvesting must be timed. The best harvest period for lettuce is after the stem is expanded, and the young stem of lettuce in this period has been fully expanded, and the fruit is crisp, fragrant and delicious, and the most commercial.

First of all, apply a lot of basal fertilizer, apply organic fertilizer in the early stage of lettuce growth, and can be mixed with an appropriate amount of calcium carbonate and plant ash, supplemented by nitrogen fertilizer, phosphate fertilizer, potassium fertilizer so fertilization, lettuce can be high-yielding.

Fertilize the lettuce within two weeks after planting, and after the lettuce has grown better, you can effectively make the lettuce grow big and good by applying fertilizer once.

It is best to apply fertilization at night for 12 hours before watering it, so that the roots will not burn out, and it can also replenish nutrients to make it grow healthier.

How long does it take for lettuce transplanting to fertilize. If the basal fertilizer is sufficient, the first top dressing should be planted in lettuce for about a month.

If the top dressing is too early, the lettuce root system is not sound, and the ability to absorb fertility is limited, and the effect is not good. Top dressing is mainly nitrogen fertilizer, and during this period, lettuce mainly absorbs nitrogen fertilizer to increase the growth of seedlings. Use about 30 nitrogen fertilizer per mu, with some well-rotted manure, or organic compound fertilizer.

25 is advisable. Fertilizer should be applied in the shed to avoid the production of ammonia.

Cause fertilizer damage. For the second topdressing, we chose to top dressing in about two months according to the growth of lettuce and the fertility of the soil. At this time, the lettuce plant has grown about 6 vertical leaves, which is the time when the fattening amount is the largest and the absorption of soil nutrients is the strongest during the whole growth period.

In the critical period of lettuce growth, the top dressing is mainly based on high concentration nitrogen and potassium fertilizer of about 40 per mu. It is better to combine some trace element fertilizers and can increase the quality of lettuce plants.

Follow-up according to the top dressing, according to the growth of lettuce, you can appropriately chase some potassium fertilizer. Using the characteristics of potassium fertilizer, improve the quality of lettuce, and the appearance will be better. In the process of top dressing, we must control the amount of fertilizer according to the fertility of the soil, and the amount can be appropriately increased.

Top dressing according to local conditions, according to the weather conditions, as well as the planting environment to operate reasonably, so as not to cause fertilizer damage or fertilizer efficiency loss, so as to be able to grow lettuce with good quality and delicious taste.

Lettuce in the 90-day growth cycle, can be divided into four stages, namely germination stage, seedling stage, rosette stage, fleshy stem formation period, each growth period of fertilizer needs are different, in the top dressing fertilizer used fertilizer will be different, in the lettuce planting management process, fertilization is a very important work. The principle of fertilization is to first light and then thick, mainly organic fertilizer, with the use of nitrogen, phosphorus and potassium fertilizer. Generally, it is necessary to fertilize two to three times during the growth of lettuce.

Lettuce topdressing, pay special attention to the control of nitrogen fertilizer use, too much nitrogen fertilizer use, will affect the root system to absorb other elements. Therefore, it is recommended that the yield of lettuce per mu is more than 7000 catties, and the amount of nitrogen fertilizer applied per mu is controlled between 20 and 24 catties. In the case of sufficient bottom fertilizer, the first top dressing can be carried out after the lettuce is fixed for one month, and 30kg of nitrogen fertilizer can be applied per mu, and with well-rotted dilute human manure or manure water, 25kg of organic compound fertilizer can also be used.

If planted in greenhouses, top dressing should be accompanied by water.

Lettuce has the greatest potassium requirement during their lifetime, requiring moderate nitrogen and minimal phosphorus. According to the fertilizer needs of lettuce, whether it is used for leaves or stems, it is necessary to apply sufficient basal fertilizer, and then do a good job of on-demand top dressing in each growth period in time. The base fertilizer for planting lettuce is mainly rotted farmhouse fertilizer, the best fertilizer is a mixture of sheep manure and cow fertilizer and straw, and the soil can improve the soil and prevent soil salinization.

In the lettuce seedling stage, top dressing can be mainly urea, generally about 5 kg per mu. At the time of the lettuce clump stage, you can top apply urea 8 to 10 kg. When the lettuce reaches the fleshy stem and begins to expand and grow, nitrogen, phosphorus and potassium compound fertilizer can be applied.

After the seedbed is tidied up, you can use the decomposed organic fertilizer, 100kg of organic fertilizer can be used for ten square meters, and one pound of potassium dihydrogen phosphate. Secondly, the temperature of lettuce after sowing should be controlled at around 23 degrees, and the seedbed should not be too dry. Top dressing for lettuce should try to follow the principle of many times and a small amount, at least 3 or 4 times during the whole growth period.

The choice of fertilizer is mainly based on chemical fertilizer, and urea, ammonium sulfate and ternary compound fertilizer with high nitrogen content can be used.

It is recommended to use potassium fertilizer in the roots, which can promote the growth of the roots and provide more nutrients to the plants, and nitrogen fertilizer in the stems and leaves, which can make the stems and leaves thicker and resistant to pests and diseases.

Compound fertilizer, such fertilizer is very suitable for lettuce, and the emergence rate of lettuce can be higher with such fertilizer.

When planting lettuce, it is necessary to often top dress, and it is best to use natural fertilizers to top dressing lettuce. There are no additives, and toxic substances.

From lettuce germination to seedling emergence stage, water and fertilizer must be sufficient, which can effectively ensure the survival rate, nitrogen fertilizer is the mainstream, because nitrogen fertilizer can effectively promote the expansion of leaf area, so in the lettuce seedlings, stems begin to expand and other periods, nitrogen fertilizer should be reasonably applied. However, during the swelling period of lettuce stems, some potassium fertilizer should be added in moderation, which can promote stem hypertrophy and ensure growth. Therefore, top dressing should also be carried out in batches, and top dressing should be carried out reasonably according to the specific situation.

High yield fertilization method for lettuce

1. Use a large amount of organic fertilizerIn order to ensure that lettuce grows well and promote the thick and strong young stems. Lettuce root system is shallow, the absorption capacity is weak, if you want to have a high yield, you must pay attention to the bottom fertilizer, apply 3000 to 4000 kg of rotting farmhouse fertilizer per mu, can significantly improve the soil, increase the content of soil organic matter, increase soil porosity, promote the root system to take root, seedlings grow strong, but also for the whole growth period to provide enough nitrogen, phosphorus and potassium, medium elements and trace elements. In the early stage of succulent stem expansion, organic fertilizer can also be supplemented to help the rapid growth of succulent stems.

In the whole growth period of lettuce, it is necessary to absorb various mineral nutrients, and the ratio of nitrogen, phosphorus and potassium required is 3 to 1. For plots that are seriously lacking in some trace elements, calcium fertilizer, boron fertilizer, zinc fertilizer and other micro-fertilizers can also be applied to the base fertilizer, which is not only simple to operate, but also can increase the content of phosphorus and potassium fertilizer in the soil, which is continuously absorbed by lettuce.

Spring lettuce is deeply turned before winter, and farmhouse fertilizer is applied in early spring in combination with land preparation. Autumn lettuce is deeply ploughed after the previous crop is harvested, farmhouse fertilizer is applied before sowing, and lettuce is planted after land preparation.

The seedling area of overwintering lettuce should not be applied too much base fertilizer to avoid excessive growth, and the seedling stage is mainly to train seedlings.

2. Lettuce likes potassium, the application of base fertilizer, before overwintering and succulent stem expansion stage, can significantly promote the thickening and growth of succulent stems. The demand for nutrients in the seedling stage of lettuce is small, and on the basis of the application of foot fertilizer, there is generally no need to apply potassium fertilizer. The application of plant ash to overwintering lettuce combined with watering and freezing water can significantly improve the anti-freezing ability and promote the growth of lettuce seedlings.

The succulent stem swelling stage is the critical period when lettuce needs potassium fertilizer, and the application of potassium fertilizer can significantly increase the thickness of lettuce, and the fleshy stem has high moisture content, tender and delicious, and good flavor. Generally, 100 to 150 kg of plant ash is applied in the bottom fertilizer, 100 kg of plant ash is applied before wintering, 30 to 35 kg of high-nitrogen and high-potassium compound fertilizer is applied when the line is sealed, and 15 to 20 kg of high-potassium compound fertilizer is applied in the succulent stem expansion period.

3. Top application of nitrogen fertilizer at seedling stage, to promote the growth of seedlings, and the application of nitrogen fertilizer at the beginning of fleshy root expansion can promote the growth of lettuce thick. After transplanting seedlings, use diluted fertilizer to lift seedlings, and apply 25 to 30 kg of high-nitrogen compound fertilizer once in about 20 days; When the line is closed, 30 to 35 kg of high-nitrogen and high-potassium compound fertilizer, 15 to 20 kg of urea or 3000 kg of diluted fertilizer are applied; At the succulent stem expansion stage, 15 to 20 kg of high-potassium compound fertilizer was applied.

4. According to the lack of soil fertilizer, it can be sprayed throughout the growing seasonApply foliar fertilizer, effectively promote the growth of plants, and promote the thickening of lettuce. Plots lacking trace elements can be sprayed with boron fertilizer, calcium fertilizer and zinc fertilizer at the seedling stage, and potassium dihydrogen phosphate, a variety of trace elements, chelated calcium high residue ridge, brassinolide and insecticides, fungicides can be mixed and sprayed, but it should be noted that it cannot be mixed with alkaline pesticides.

What are some tips for growing lettuce? Sowing knows how to answer to the sheng disturbance harvesting master 6 skills, lettuce is high-quality and noisy and high-yielding!

It is better to use nitrogen fertilizer for lettuce topdressing, because this fertilizer is very conducive to the growth of lettuce, and the nutrition is also very abundant. And not much else.

1. When planting lettuce, sufficient base fertilizer needs to be applied, and fully rotted farmhouse fertilizer can be used, and raw fertilizer cannot be used directly, and the fertilizer will ferment in the soil to produce a lot of heat, resulting in root burning. You can use the well-rotted manure to water the ground, and then turn the soil for planting, and the base fertilizer can ensure that the lettuce has enough nutrients in the early stage of growth. Second, two months after the compound fertilizer planting is completed, lettuce will enter the balling period, during this time its demand for nutrients will increase, you can apply compound fertilizer to it, to ensure the balance of various elements, so as to promote its growth with rhizomes and leaves.

3. Vegetable fertilizer in the lettuce growth period, you can also apply vegetable fertilizer to it, each hectare of vegetables is to apply three thousand catties of fertilizer, sprinkle the fertilizer evenly on the soil surface, and then water to dilute the fertilizer on it, to ensure that the fertilizer effect can penetrate into the soil, which is more conducive to the absorption of the root system.

Lettuce begins to enter the seedling stage when the true leaves are revealed, and the growth stage of lettuce seedling stage takes about 25 days until the first leaf inflorescence 5 8 leaves end the seedling stage and enter the rosette stage. Lettuce seedling stage fertilizer is mainly nitrogen fertilizer, nitrogen plays the role of seedlings and strong seedlings, lettuce seedling stage topdressing, preferential selection of human urine manure or pig urine manure with water drenching, with 1:8 10 with water to water, once every 7 days; If there is no urine feces, pig urine feces can be sprayed with ammonium bicarbonate or urea with water, and ammonium bicarbonate or urea with water is sprayed, and about 500 kg of water is needed per mu, and it is sprayed once every 8 days.

It is better to use nitrogen and potassium fertilizers for plants, which can promote flowering, and at the same time have a more balanced nutrient content and reduce the production of pests and diseases.

Lettuce is a fertilizer-tolerant vegetable, need enough nitrogen fertilizer, 20 days before transplanting lettuce in the field, apply enough farmhouse fertilizer in the field, fertilize more than 2000 kg per acre of field, transplant 7 days after the first time with 10 kg of urea per mu soluble watering, can make lettuce quickly absorb nitrogen fertilizer, promote rooting growth, 25 days later, the second time to apply top dressing, before this fertilization, open a shallow ditch on the side of the lettuce, 40 kg of high nitrogen compound fertilizer per mu is scattered, after scattering the soil, and watering a horse water, High-nitrogen compound fertilizer can make lettuce quickly absorb nitrogen fertilizer, potassium and phosphorus fertilizer in high-nitrogen compound fertilizer can make lettuce thick and strong, lettuce topdressing is applied at least twice, the first time with urea, the second time with high-nitrogen compound fertilizer as top dressing.