Adding potassium and phosphorus to the phosphate in the early rice, the late rice can be used less or no phosphate fertilizer. If compound fertilizer is used as top dressing, nitrogen-potassium binary compound fertilizer can be used, so that the relative cost of fertilization is relatively low. For the late rice, the 25% compound fertilizer is 25~30 kg plus 5 kg of potassium chloride, and the fertilizer efficiency is close to 45% compound fertilizer of 20-25 kg, while the former is less than 1/3 of the cost of fertilization. . For 20% nitrogen and potassium compound fertilizer, 30 to 35 kg can be applied per mu.
It can also be used with 15 to 20 kg of urea and 10 to 15 kg of potassium chloride. If the base fertilizer is applied with ammonium bicarbonate or compound fertilizer, the top dressing is generally carried out with single fertilizer, 10 to 15 kg of urea and 5 to 15 kg of potassium fertilizer.
Nitrogen control and early application of nitrogen in late rice should adopt a "control" strategy. The former crop is corn, early rice and other fertilizer-consumption crops, then the late rice should ensure the appropriate nitrogen application level, and the application of nitrogen fertilizer should be reduced to 15-20 kg of urea. Do not blindly reduce nitrogen; the former is watermelon, pepper and other vegetables, and the general use of urea is 7.5~ About 10 kilograms; the former crop is a soybean crop, such as soybeans, peanuts and other legumes, which can be applied with less nitrogen fertilizer. Generally, about 5 to 7.5 kilograms of urea is applied per mu.
For the returning of straw to the field, it is especially necessary to pay attention to the early application of quick-acting nitrogen fertilizer to prevent the temporary nitrogen deficiency of the soil caused by microbial nitrogen uptake. Generally, the nitrogen fertilizer is applied about 5 days after the late rice insertion (polishing) and is applied together with the potassium fertilizer.
The advantage of increasing yield in the mid-term plus spike-fertilized late rice is that the spike is large, and the yield is won by the big spike. Therefore, in the middle of late rice, it is necessary to supplement the fertilizer: for the yellowing of the leaves and the lack of fertilizer, after the late rice field or the field control seedlings, combined with rehydration, the urea is applied for 2 to 3 kg, but the dosage should be strictly controlled. Strictly prevent greedy and late maturity.
In the late stage, the grain fertilizer is 50 grams per grain and 250 grams of urea. It can also be used with 300 grams of potassium dihydrogen phosphate and 250 grams of urea, and sprayed 50 kilograms of water on the leaves.
Author: Long Vanves
Source: Farmers Daily
It can also be used with 15 to 20 kg of urea and 10 to 15 kg of potassium chloride. If the base fertilizer is applied with ammonium bicarbonate or compound fertilizer, the top dressing is generally carried out with single fertilizer, 10 to 15 kg of urea and 5 to 15 kg of potassium fertilizer.
Nitrogen control and early application of nitrogen in late rice should adopt a "control" strategy. The former crop is corn, early rice and other fertilizer-consumption crops, then the late rice should ensure the appropriate nitrogen application level, and the application of nitrogen fertilizer should be reduced to 15-20 kg of urea. Do not blindly reduce nitrogen; the former is watermelon, pepper and other vegetables, and the general use of urea is 7.5~ About 10 kilograms; the former crop is a soybean crop, such as soybeans, peanuts and other legumes, which can be applied with less nitrogen fertilizer. Generally, about 5 to 7.5 kilograms of urea is applied per mu.
For the returning of straw to the field, it is especially necessary to pay attention to the early application of quick-acting nitrogen fertilizer to prevent the temporary nitrogen deficiency of the soil caused by microbial nitrogen uptake. Generally, the nitrogen fertilizer is applied about 5 days after the late rice insertion (polishing) and is applied together with the potassium fertilizer.
The advantage of increasing yield in the mid-term plus spike-fertilized late rice is that the spike is large, and the yield is won by the big spike. Therefore, in the middle of late rice, it is necessary to supplement the fertilizer: for the yellowing of the leaves and the lack of fertilizer, after the late rice field or the field control seedlings, combined with rehydration, the urea is applied for 2 to 3 kg, but the dosage should be strictly controlled. Strictly prevent greedy and late maturity.
In the late stage, the grain fertilizer is 50 grams per grain and 250 grams of urea. It can also be used with 300 grams of potassium dihydrogen phosphate and 250 grams of urea, and sprayed 50 kilograms of water on the leaves.
Author: Long Vanves
Source: Farmers Daily
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