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If the amount of fertilization in the rape field is insufficient, the benefits of the field should not be exerted. Daejeon should apply sufficient fertilizer according to the growth of rapeseed. According to the test, if the yield of rapeseed is more than 100 kg per mu, 10 kg of pure nitrogen, 4 kg of phosphorus and 10 kg of potassium should be guaranteed per mu.
Fertilizer application at the three points of acupoints is likely to cause excessive local fertilizer concentration, resulting in the roots not being absorbed evenly, or even causing root burning and affecting growth, especially in the case of ammonium bicarbonate. Therefore, rapeseed fertilization is best applied in the ditch line, generally 10 cm deep and 20 cm wide.
When four kinds of seedlings are delayed and applied to rapeseed, it is necessary to use the dilute manure to cast the rapeseed root water; then the manure is used with 100~150 kg of manure and 2~3 kg of urea, and water is applied to 400~500 kg. In order to benefit the strong seedlings.
Five bogey neglecting the application of boron fertilizer Rape is sensitive to the reaction of boron fertilizer. Boron deficiency can cause physiological function diseases, root system is poorly developed, only flowering is not strong or the grain is not full. Generally, 0.2~0.3 kg of borax is used as the base fertilizer. At the same time, in the rapeseed seedling stage, the bud stage, the flowering stage, spray 1 time of boron fertilizer, each time using 50 grams of borax to spray 50 kg of water.
Rape fertilization has "five bogey"
Single application of chemical fertilizers The simple application of chemical fertilizers in rape fields will lead to soil compaction, physical and chemical properties, and reduced production levels in the field. Organic fertilizers and chemical fertilizers should be combined. Generally, organic fertilizers account for more than 60%. At the same time, the types of rapeseed fertilizers should be complete, nitrogen, phosphorus and potassium should be properly matched, and zinc fertilizer should be added to the zinc-deficient fields. And the general application of boron fertilizer to prevent rapeseed "flowers and not real".
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