What fertilizer should be applied during the long horn stage of rapeseed, and does it need fertiliza

Rapeseed has strong adaptability to soil, but prefers loose, fertile, high organic matter content, and strong water and fertilizer retention. It can be applied with fertile leaf fertilizer when applying basal fertilizer, and the absorption of nitrogen, phosphorus and potassium by rapeseed is greater than potassium and potassium is greater than phosphorus. For every 1000 kg of rapeseed produced, it needs to absorb kilograms of pure nitrogen, phosphorus (P2O5) kilograms, and potassium (K2O) kilograms.

Deficiencies in the trace element boron can cause boron deficiency. Individual plants absorb less nutrients; However, it reaches tens of thousands of plants per mu, so the plants in the group per unit area absorb more nutrients. The nutrient demand of rape is synchronized with the growth of plants, and the growth of plants in the early stage of growth is small, and the absorption of nutrients is also small.

When the plant enters the vigorous growth period, the uptake of nutrients increases. This period, especially nitrogen, is related to the yield and quality of rapeseed, if the nitrogen is insufficient, the leaves become smaller, yellow, and the eating rate is low, therefore, in the facility cultivation to increase the application of basal fertilizer, improve the soil environmental conditions, conducive to root absorption, timely topdressing of nitrogen and potassium fertilizer, transplantation of slow seedlings after topdressing a small amount of nitrogen fertilizer, into the vigorous growth period, the amount of available nitrogen and potassium fertilizer topdressing should be increased, phosphate fertilizer for basal fertilizer.

The growth period of rape is short, top dressing 1 2 times can be, 7 10 days after planting, top dressing with slow seedling fertilizer, top dressing with urea 5 10 kg per mu, or with fertile leaf fertilizer application. Enter the vigorous growth period of rape for the second top dressing, top dressing 10 15 kg of urea per mu, or a bag of fertile leaf fertilizer per mu. If the soil is deficient in boron, 1500 times of boron fertilizer should be sprayed in time to prevent boron deficiency symptoms in rapeseed.

High-potassium fluid fertilizer or high-potassium granular water-soluble fertilizer.

Rapeseed fertilization is the key to ensure stable and high yield of rapeseed, and pesticides are also needed in the event of diseases.

First, early application of seedling fertilizer seedling fertilizer should be applied appropriately, the amount of application should account for 10 15 of the total amount of fertilizer, generally 500 kg of manure per mu of rotting acquaintances, plus urea.

5 7 kg or ammonium carbonate.

10 15 kg. When applying chemical fertilizer, it is best to apply fertilizer to clean water.

2. Stable application of wax fertilizer Wax fertilizer is mainly slow-release fertilizer, 3000 4000 kg of soil miscellaneous fertilizer per mu, about 20 kg of compound fertilizer, and 300 500 kg of straw. Before fertilization, cultivate and weed, then fertilize, and shovel the soil and root consolidation.

Three, heavy application of fertilizer fertilizer is rapeseed in the life of fertilization effect of a good fertilizer, usually accounting for 30 of the total amount of fertilizer, at the same time, to do: one is to see the seedling fertilization, the seedlings are large, the fertilizer falls yellow, the soil stamina is insufficient to reapply the field. The second is the combined application of nitrogen and potassium fertilizers, for the autumn and winter strong seedling fields, at the end of January and early February of the following year, 15 20 kg of urea and potassium chloride are applied per mu.

5, 6 kg. Third, for the serious lack of fertilizer field, it is advisable to apply the fertilizer in two times, with an interval of 10 to 15 days, and the dosage is slightly more.

Fourth, skillful application of flower fertilizer Flower fertilizer has the effect of making up for the lack of fertility in the middle and late stages. Specifically, according to the seedling condition and soil fertility, 4 7 kg of urea or ammonium sulfate should be applied to the fields with stable growth and insufficient fertility after spring.

8 10 kg, the weak growth should be applied early, the growth is good, the stamina of the field should not be fertilized.

5. Boron fertilizer must be applied Brassica napus is a boron-loving crop, and hybrid rape is more sensitive to boron reaction. Boron fertilizer is generally used basal application and foliar spraying is better, when doing base fertilizer, the mu is mixed with kilograms and bottom fertilizer, and the leaves are selected in the budding stage and the early flowering stage, and the mu is used 150 grams of borax each time, and the water is 50 75 kg, and it is sprayed 2 times.

6. Supplemental application of grain fertilizer The root activity of rapeseed decreases after flowering, and supplemental application of grain fertilizer is an effective method to prolong the life of leaves and stems, increase grain weight and improve yield. Generally, potassium dihydrogen phosphate is used per mu.

150 grams, kilograms of urea, 50 60 kilograms of water, spray 2 3 times, can also be combined with disease prevention and insect treatment when applying granular fertilizer.

7. When raising seedlings, an appropriate amount of carbendazim can be added to the soil.

Prevent root rot in oilseed rape; Common diseases of oilseed rape are generally mold disease and aphids.

When the area of mycosis occurs more than 10%, it can be prevented and controlled by pesticides; Rapeseed seedling period and after transplanting, aphid disease often appears, can be seedling and transplanting after each 1-2 times of medicine, if the rape grows up and then aphid disease, you can use an appropriate amount of dimethoate.

Spray with water. In addition to root rot, mycosis and aphids and other diseases in the process of rape planting, other diseases rarely occur, when the disease occurs, the leaves and disease parts can be removed first, if the disease continues to occur, the disease can occur when the range reaches 10%, spray pesticides in time. In each growth cycle of rapeseed, appropriate medication should be used, and too much medication will also be detrimental to the growth of rapeseed.

Hello dear! Pre-seedling fertilizer is applied when the seedlings are set or 5 true leaves, generally 5-6 kg of urea per mu, in the soil lacking phosphorus and potassium, if the base fertilizer is not applied phosphorus and potassium fertilizer, the potassium dihydrogen phosphate can be supplemented; Top dressing in the late seedling stage should depend on the seedling condition and climate. Generally, 8-10 kg of high-nitrogen compound fertilizer is applied per mu.

Varieties with strong spring or areas with warm winter should be applied early, and late application can be applied in areas with low temperature or three crops in winter.

Summary. Rapeseed topdressing is best to use compound fertilizer, which should include nitrogen, phosphorus, potassium, as well as trace elements calcium, iron, zinc, copper, manganese, etc., according to the growth of rape, combined with soil fertility, choose the appropriate compound fertilizer to meet the nutritional needs of rapeseed.

Now what is the best fertilizer to use for rape topdressing in February, rapeseed growth is not good.

Rapeseed topdressing is best to use compound fertilizer, lead should include nitrogen, phosphorus, limb potassium three elements, as well as trace elements calcium, iron, zinc, copper, manganese, etc., according to the growth of rape, combined with soil fertility, choose the appropriate compound fertilizer to meet the nutritional needs of rapeseed.

Now the rape is dwarf, the growth is not good, the leaves are purple-red, the land is arid, and what fertilizer is good to use for top dressing.

Rapeseed dwarf vermilion is planted on dry land, and can choose to be mixed with nitrogen, phosphorus and potassium compound fertilizer, such as compound compound fertilizer, which can meet the nutrient needs of kernel plants, improve the texture of the soil cavity, improve the absorption capacity of nutrients, and help the growth and development of plants.

The land is thin and there is no fertilizer for planting, and now the top dressing is supplemented with compound fertilizer, and what drugs can be sown on the leaf surface.

Compound fertilizers can be sown, nitrogen, phosphorus and potassium fertilizers can also be sown, and organic fertilizers can also be sown, such as organic phosphorus fertilizers, organic nitrogen fertilizers, etc.

After the rape is harvested, is it possible to sow corn in a wanton search, and does the jade hail key rice need to be cultivated in advance? If you sow seeds directly, what fertilizer do you need to add, and are there any good corn seeds with high yield and drought tolerance seeds, and it was already June.

Yes, Yutatami can be sown directly, but an appropriate amount of nitrogen fertilizer and calcium phosphate fertilizer need to be added to promote root development and leaf growth. It is recommended to choose drought-tolerant and cold-tolerant corn varieties, such as late-maturing corn varieties "Late-maturing No. 7", "Late-maturing No. 8", "Late-maturing No. 9", etc., which have good drought resistance and cold resistance, can meet the needs of early-maturing corn, and the yield is also very high.

What kind of fertilizer is calcium phosphate fertilizer, calcium phosphate is a compound rotten fertilizer, which is composed of calcium phosphate and other nutrients, mainly used to improve soil fertility, improve the stress resistance of crops, promote crop growth and development, and improve crop yield and quality.

1. The nutrient requirements of each crop in different growth stages are different, and rape is no exception. Therefore, in order to obtain high yield and high quality of oil and laughing cabbage, it is necessary to apply sufficient base fertilizer and reasonable top dressing.

2. Early application of seedling fertilizer due to the long seedling period of rapeseed and large amount of fertilizer. Therefore, seedling fertilizer must be applied in advance to promote the growth of rapeseed before winter and ensure safe wintering. Seedling fertilizer is generally applied in accordance with the principle of early, fast and light after transplanting rapeseed or in the five-to-six-leaf stage of direct seeding rapeseed.

The so-called early is the time of top dressing early, and transplanting rape can be applied 3 to 4 days after the live tree.

3. In early spring, when the temperature rises to more than 10, rape buds and sprouts appear one after another, which is the fastest growing and most fat-absorbing period of vigorous fertility. Sprout fertilizer is applied before or at the beginning of rapeseed sprouting, which can make rapeseed spring hair stable and blind and long, and there are many strong branches. Top dressing should be done "fast" and "early", and 25 kg of urea or ammonium carbonate can be applied per mu.

For rapeseed with late sowing period, serious frost damage and poor seedling potential, it should be applied early and more often.

4. Skillful application of flower fertilizer: As the saying goes: "wheat is watered, vegetables are watered".

Rapeseed is an infinite inflorescence, with a long flowering period, while flowering, pod-setting, and ripening, so before flowering or at the beginning of flowering, the seedlings should be applied with pro-flowering fertilizer to improve the pod-setting rate and reduce pod dropping. Generally, 2 3 kg of urea or 7 8 kg of ammonium carbonate per mu is applied at the early flowering stage. In the early stage, the fertility is sufficient and the growth is good, and it is necessary to strictly prevent the flower fertilizer from being applied too late and too much, so as not to cause greedy green and late ripening.

For fields that are generally deficient in fertilizer, kilograms of potassium dihydrogen phosphate plus kilograms of urea can also be used per mu, and then 75 kilograms of water can be sprayed in the full flowering period.

5. Supplemental application of boron fertilizer: spraying boron fertilizer in the early stage of rapeseed extraction can avoid the "flower but not fruit" syndrome and improve the seed setting rate. At the initial stage of sprouting, 60 kg of borax aqueous solution was sprayed per mu each time, or 60 kg of water was sprayed with 50 grams of instant boron fertilizer (liquid boron fertilizer), and the effect was better.

In the case of no boron fertilizer in the bottom fertilizer, the effect of boron spraying outside the root was more prominent.

With the emergence of different planting patterns, the fertilization method and amount should be adjusted. The use of rapeseed combined direct seeding machine can complete the ditching, fertilization, sowing and other processes at one time. If a special slow-release fertilizer is used, only the seedlings in the later stages of growth can determine whether the top fertilizer is required.

The use of UAV aerial seeding, interplanting and mechanized transplanting of blanket seedlings and other technologies, there are certain differences in fertilization methods, such as the aerial sowing method of rice tanker for full straw returning to the field, which is suitable"The bottom is applied first, and the top is applied"The method of fertilization.

<> according to the classification guidance of soil fertility, local climate environment and seedling condition, scientific topping. The amount of fertilization is different for different soil fertility, and increasing the amount of fertilizer in medium and upper fertility is conducive to high yield, while increasing the amount of fertilizer in low fertility is difficult to achieve high yield. Rapeseed emergence will be affected by soil moisture, fertilizer, climate and other factors, sowing late rapeseed, not only the amount of seeds should be increased, the seedling fertilizer should also be applied appropriately early, promote the early growth of seedlings, and ensure that rapeseed seedlings can safely overwinter.

After transplanting, in order to improve the survival rate of rapeseed, an appropriate amount of manure and a certain amount of urea can be used to irrigate the roots to guide the rapid growth of seedlings. Due to the low temperature and poor photosynthesis before winter, the vegetative growth of rapeseed is slow and the dry matter accumulation is small. It can be applied during short periods of hot weather before the onset of winter"Turn green and live"Fat to satisfy"Dowry fertilizer"to enhance the cold resistance of rapeseed in winter and promote the early growth of rapeseed after spring.

The application of borax fertilizer in the rape flower corner stage is conducive to flower and fruit preservation and increase rape yield. The focus is on spraying borax, which is conducive to pod formation and drumming. The addition of borax fertilizer is conducive to flower and fruit preservation.

This should be based on the emergence of rapeseedling, soil conditions, if the growth is normal, generally apply granular fertilizer, so as not to cause late ripening.

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It is very important to apply chain bright fertilizer to rape flowers in the early stage. If you can do a good job of field management and reasonable fertilization before lifting, you can greatly improve the yield, so you must pay attention to the proportion of fertilizer in the width of the shed.

Animal fertilizers should be used to mix these fertilizers with the soil and then watered to help the rape absorb nutrients better.

This depends on the specific situation, depending on what nutrients rape flowers lack, what fertilizer to apply.

What is the best fertilizer to apply during rapeseed sprouting? At this time, the amount of nitrogen should be controlled, and more potassium-containing fire soil ash should be applied to control lodging, strengthen seeds, and increase oil content. Rapeseed is one of the main crops of edible oil raw materials in China, rape is an annual or biennial herbaceous plant, rapeseed can be used to extract edible oil, therefore, it is planted in a few areas in the south and north of China.

<> The fertilizer applied before or at the beginning of rapeseed extraction is called sprout fertilizer. It plays an important role in promoting the steady growth of spring hair and striving for strong sprouts, more branches and more horns. If the spring is excessive, rapeseed grows vigorously, and the middle and lower parts of the ineffective branches breed too much, then the plant is overshadowed, the disease is aggravated, the main goal of the rapeseed sprouting stage is to have strong roots, more branches, only the roots are strong and do not lodging, more branches, more angles, rapeseed yield can be stable and high-yielding.

To achieve this goal, it is necessary to make the leaves and roots grow well, so that they are spring and grow steadily.

It is about to enter the beginning of spring, and this winter's temperature is high, and rape has entered the budding stage. Now is also the period of applying rapeseed fertilizer, so the type and quantity of top dressing should be determined according to the growth of rapeseed seedlings and the demand for fertilizer elements in the middle and late stages of rapeseed seedlings. Promote the steady growth of rapeseed, achieve more seeds, increase grain weight, and lay the foundation for high yield.

In terms of specific management, we can pay attention to these key points of fertilizer application. After the beginning of spring, the temperature rises, the rigid water increases, the growth rate of rapeseed accelerates, and it has entered the stage of budding, sprouting and flowering.

High-yield rapeseed requires strong winter and spring hair. Sprout fertilizer not only has an impact on yield, but also has a certain impact on quality. Tang Xiangru et al.'s research shows that increasing the amount of nitrogen and the proportion of fertilization will inhibit the activity of phosphatase (PPASE) of the granular, first of all, to apply plantar fertilizer, the bottom fertilizer is best to use farmhouse fertilizer, such as rape cake, sesame cake after fermentation, it is a good farmer's organic fertilizer, or use poultry manure as the base fertilizer, if there is no farmyard fertilizer, you can also use compound fertilizer as the base fertilizer.