Rape fertilization has "five taboos"

A single avoidance of single application of chemical fertilizer can only be applied to fertilizer field soil compaction, physical and chemical properties deteriorated, the level of field production is reduced, organic fertilizer and fertilizer should be applied together, the general organic fertilizer accounted for more than 60%. At the same time, the types of rapeseed fertilizer should be complete, and nitrogen, phosphorus and potassium should be properly matched, and zinc fertilizer should be added to the zinc-deficient field. And generally promote the application of boron fertilizer to prevent rape "flowers but not real."

Two bogey fertilizers are insufficient. If the fertilization amount of rapeseed fields is insufficient, the benefits that Daejeon should have cannot be exerted. Daejeon should apply enough fertilizer according to the growth needs of rape. According to the test, if the yield per mu is more than 100 kg per mu, 10 kg of pure nitrogen, 4 kg of phosphorus and 10 kg of potassium must be guaranteed per mu.

Three bogey points fertilizer fertilization points fertilization material can easily lead to excessive local fertilizer concentration, resulting in root can not be uniformly absorbed, and even lead to burning roots, affecting growth, especially in the application of ammonium bicarbonate. Therefore, rapeseed fertilization is best applied in the ditch between rows of rape, generally 10 cm deep, 20 cm wide is appropriate.

When the fourth bogey seedlings are transplanted, the dilute human waste shall be used to apply the rapeseed to set the root water; then the mu shall be 100-150 kg of urea and 2 to 3 kg of urea, and 400 to 500 kg of water shall be poured. To strong seedlings.

The five bogey ignore boron fertilizer application of rape is more sensitive to the reaction of boron, boron deficiency can cause physiological diseases, root dysplasia, only flowering is not strong or the grain is not full. Generally 0.2-0.3 kg of borax is used as base fertilizer. At the same time, boron fertilizer was sprayed once at the seedling stage, bud stage and flowering stage of rapeseed, and 50 grams of borax was used to spray 50 kilograms of water per mu.

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