For cabbage, the requirements for fertilizer should be based on nitrogen and potassium, and appropriate application of phosphate fertilizer. The compounding amount of the three elements N:P:K was 3:1:4 throughout the growth process. From the growth stage analysis, the seedlings need more chlorine, reaching the peak during the rosette period. Phosphorus and potassium are required during the ball-forming period, and the growth during the ball-forming period is the largest, accounting for 70%-80% of the whole growth period.
The specific method of application is: the cabbage is planted for more than ten days. After watering and cultivating the seedlings, the first topdressing can be started. The fertilizer is 10-15 kg per mu or 1000 kg of human excrement, which provides sufficient growth for the rosette period. nutrient. In the initial stage of the rosette leaves, secondary topdressing can be carried out, the concentration of human excrement and urine can be appropriately increased, and 15-20 kg of quick-acting nitrogen fertilizer can be added to accelerate the rapid growth of the leaves. In the rosette period, the third top dressing can be carried out. Ditching or digging should be carried out between rows, and the organic fertilizer and ammonium sulfate, superphosphate and other fertilizers should be traced. After the application, the soil is rehydrated and watered. After entering the ball, it is in the early stage. In the middle and the middle, separately topdressing twice, each time chasing ammonium phosphate 15-20 kg. In the late stage of cabbage, the fertilizer is generally no longer applied.
Anhui Science and Technology News
The specific method of application is: the cabbage is planted for more than ten days. After watering and cultivating the seedlings, the first topdressing can be started. The fertilizer is 10-15 kg per mu or 1000 kg of human excrement, which provides sufficient growth for the rosette period. nutrient. In the initial stage of the rosette leaves, secondary topdressing can be carried out, the concentration of human excrement and urine can be appropriately increased, and 15-20 kg of quick-acting nitrogen fertilizer can be added to accelerate the rapid growth of the leaves. In the rosette period, the third top dressing can be carried out. Ditching or digging should be carried out between rows, and the organic fertilizer and ammonium sulfate, superphosphate and other fertilizers should be traced. After the application, the soil is rehydrated and watered. After entering the ball, it is in the early stage. In the middle and the middle, separately topdressing twice, each time chasing ammonium phosphate 15-20 kg. In the late stage of cabbage, the fertilizer is generally no longer applied.
Anhui Science and Technology News
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