What is the best fertilizer for rapeseed and what is the best fertilizer for growing rapeseed?

Rape requires a lot of fertilizer, according to the demand: nitrogen fertilizer, phosphate fertilizer, potassium fertilizer, and trace boron fertilizer.

Supplemental boron fertilizer. Spraying boron fertilizer in the early stage of rapeseed extraction can avoid the disease of "flowering but not fruiting" and improve the seed setting rate.

Rapeseed planting should pay attention to the application of basal fertilizer, which is insufficient and the seedlings are thin, which will affect the growth of plants and even the economic yield of rapeseed. Rapeseed base fertilizer should be mainly farmhouse fertilizer, with chemical fertilizer balanced fertilization, to lay a good foundation for rapeseed fertilizer in its lifetime. According to the fertilization of different periods, the high yield of rapeseed must be strong, and the developed root system is the foundation.

Farmhouse fertilizer should be used as base fertilizer, combined with phosphate fertilizer and a small amount of nitrogen fertilizer, nitrogen fertilizer to promote seedling growth. Oilseed rape is a phosphorus-loving crop, and phosphorus fertilizer promotes root development, enhances cold resistance, produces more pods and converts fat.

Each crop has different nutrient requirements at different growth stages, and oilseed rape is no exception. Therefore, in order to obtain high yield and high quality of rapeseed, it is necessary to apply sufficient basal fertilizer and reasonable top dressing. Early application of seedling fertilizer Due to the long seedling stage of rapeseed, the amount of fertilizer absorbed is large.

Therefore, seedling fertilizer must be applied in advance to promote the growth of rapeseed before winter and ensure safe wintering. Moss fertilizer is applied before or at the beginning of rapeseed mossing, which can make rapeseed grow steadily in spring and have many strong branches. Spraying boron fertilizer in the early stage of rapeseed moss extraction can avoid the "flower but not fruit" syndrome and improve the seed setting rate.

In the early stage of mossing, 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. Rapeseed is flowering, podding, and ripening, so before flowering or at the beginning of flowering, look at the seedlings and apply the flower fertilizer to improve the pod setting rate and reduce pod drop.

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.

Planting rape with organic fertilizer is good. Rapeseed needs to be fertilized with nitrogen, phosphorus and potassium, which are essential nutrients for rape to grow. When fertilizing, it is necessary to use the strategy of promoting the front and stabilizing the future.

That is, 70% of nitrogen fertilizer, phosphate fertilizer, and potassium fertilizer, after mixing, is used as base fertilizer or seedling fertilizer. The remaining 30% of nitrogen fertilizer is used during the moss fertilizer period.

Rapeseed needs nitrogen, phosphorus and potassium fertilizers, and can be mixed with three-element fertilizers. For example, the well-known Stanley.

Hello, the vigorous development of rapeseed seedlings is the basis for high and stable yield. It is necessary to make full use of the heat before winter to promote autumn and winter hair. After transplanting rapeseed 7 to 10 days after planting, water-soluble fertilizer is applied to it, and urea or human manure can be applied per mu.

The bottom application of boron fertilizer per mu can be mixed with other nitrogen and phosphorus water-soluble fertilizers and applied to the seedbed or direct seeding rape field. Generally, it is advisable to apply it to the upper layer of soil. The amount of bottom application can be determined according to the amount of available boron content in the soil.

Soil available boron is 0For boron suitable areas above 5mg kg, 05kg borax; Kg of borax can be applied at the bottom of the boron-deficient area containing mg kg; In severe boron-deficient areas containing less than mg kg, the application rate of boron fertilizer should be 1kg.

Nutritional properties of oilseed rape.

1. Nitrogen: the absorption of nitrogen at the seedling stage accounts for 45% of the total absorption, the seedling stage is the critical period of nitrogen nutrition, and the vegetative growth and reproductive growth of the budding stage are very vigorous, which is the period when rape needs more nitrogen.

2. Phosphorus: rape is sensitive to phosphorus in the early stage of growth, and phosphorus can be reused in the crop, so rape flowering to maturity stage is the period when rape absorbs more phosphorus, accounting for more than 50% of the whole growth period, and 60-70% of phosphorus is distributed in the grain after maturity.

3. Potassium: Rapeseed has a great demand for potassium, and the potassium concentration in the plant at the stage of sprouting is high, so it must be applied before sprouting, and the earlier the application, the better the effect.

4. Boron: Boron has a great impact on the root development of rapeseed, flowering, pollination and seed setting, and the seedling stage, sprout stage and flowering stage are the key periods for rape to need boron.

What is the best fertilizer for rapeseed? The best fertilizer for rapeseed is compound fertilizer, because compound fertilizer contains nitrogen, phosphorus and potassium, nutrients needed by a variety of plants, so it is very suitable for rapeseed.

If you grow rapeseed, it is best to eat some compound fertilizers, and then there are phosphorus fertilizers, nitrogen fertilizers and potassium fertilizers are the best.

Rapeseed fertilization to dedicateCompound fertilizerThe effect is better.

1. When ploughing the field, the whole field is sprinkled with compound microbial ecological fertilizer (containing organic matter and humic acid.

Chelation of trace elements.

and beneficial microorganisms), which can not only increase the content of soil organic matter, but also improve soil permeability. After making the box and taking the ridge, the rape seeds are seeded live.

2. After the rape seedlings emerge and the seedlings are interspersed, the microbial agent plus chlorine-based compound fertilizer (the recommended ratio is 23-10-15) is mixed with water to water the roots of the rape seedlings as seedling fertilizer;

3. When overwintering, use chlorine-based compound fertilizer (the recommended ratio is 19-9-18) as wax fertilizer, and spread it all over the field;

Fourth, in order to improve the cold resistance of rapeseed, combined with aphids and cabbage insects.

, polyenergetic tiger amino acids can be used.

Foliar spray of Chinese herbal medicine nutrient solution for 1 time;

5. At the beginning of spring, when rape begins to draw moss, combine with disease and insect control and flowers but not fruit, and then use Chinese herbal medicine nutrient solution for foliar spray 1-2 times.

Characteristics of rapeseed fertilizer requirements:

1) The demand for nitrogen, phosphorus and potassium is large to produce 100 kg of rapeseed.

Kilograms of nitrogen, kilograms of phosphorus, kilograms of potassium are required. At a certain level of production, the production of the same weight of product, rape requires 3-5 times more nitrogen, phosphorus and potassium than rice, wheat and corn.

2) There were two peak periods for nitrogen uptake due to the different requirements for nitrogen, phosphorus and potassium at different growth stages of rapeseed, namely seedling stage and sprout stage. The potassium uptake at the rape stage accounts for about half of the whole growth period, and the potassium deficiency in the early stage is deficient.

It can lead to dead seedlings or severe yield reduction, so sufficient nitrogen and potassium nutrition before the flowering stage of rape is the key to high yield.

3) Rapeseed is particularly sensitive to phosphorus and boron fertilizers, and if the available phosphorus content in the soil is less than 5 mg kg, rapeseed will have obvious phosphorus deficiency symptoms, and phosphorus deficiency will have a serious impact on yield at any stage of growth. The demand for available boron in the soil is about 5 times higher than that of other crops, and special attention should be paid to the application of boron fertilizer in production.

When flowering and poding, when the soil is deficient in potassium, spray once at the first flowering stage, and do not shade. Rape Honda boron. The root system of rape has a strong ability to absorb phosphorus.

The amount of phosphate fertilizer is generally 20-30 kg of superphosphate or calcium-magnesium phosphate fertilizer per mu, but the reaction is sensitive, potassium 8, rapeseed base fertilizer is divided into bottom fertilizer and seed fertilizer, generally with rotting human manure and available phosphorus and potassium fertilizer, in rape sowing or transplanting concentrated in the row or hole, so as to avoid poisoning, the effect is good. 5-10, boron deficiency will be "flower but not fruit".1 kg, need more fertilizer, and the effect of potassium fertilizer alone is lower, grain weight is related to the later nutritional conditions, rape growth is poor, 5-10 kg of potassium chloride per mu, fruit increase effect is great, with rotting human and animal manure and urine for seedling fertilizer, sprout stage, can be sprayed with 1% urea or superphosphate or potassium dihydrogen phosphate.

Leafy vegetables generally use compound fertilizers, especially compound fertilizers with a balance of nitrogen, phosphorus and potassium, because phosphate fertilizers can promote the growth of plant roots, and potassium fertilizers can promote the development of fruit leaves.