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First, the benefits of urea deep application:
1. Urea deep application can completely avoid burning and burning, and can reduce the loss of volatilization;
2. Urea autumn application, placing the fertilization point in the soil layer with dense roots to provide nitrogen nutrient environment for the crop;
3. Urea autumn application can alleviate the tension during spring sowing, and protect the soil, so that the wheat is broadcast in the high-yield period, and the spring broadcasting initiative is guaranteed.
Second, the urea deep application method:
In the plot to plant wheat in the next year, it is necessary to level the ground in the autumn, and then suppress it after the whole, and reach the sowing state. Fertilization requires that the ground temperature be reduced to about 5 degrees, that is, 10-15 days before freezing, for autumn fertilization. In the coming year, soybeans and corn fields can be combined with autumn ridges to carry out ridges and fertilizers. The core of autumn fertilization is in a deep word, and the depth of fertilization is 10-12 cm. In the autumn, the amount of fertilizer applied is generally 2/3 of the amount of fertilizer applied for autumn application, and 1/3 is applied for spring fertilizer.
Urea autumn application attention timing, fertilization premature urea under the action of urease, converted into ammonium Carbonate and ammonium bicarbonate, easy to decompose and release ammonium, its volatile, large loss; if the fertilization is too late due to soil freezing Go on. Autumn application of urea should adhere to standard operation, no heavy or no leakage, uniform depth, tight soil cover, applied to the head, applied to the side, and should be suppressed after fertilization. Autumn rain is big, the water is too much, it is not suitable for autumn application, the quality of fertilization is not high, and it is better to lose and reduce fertilizer efficiency. Sandy soil has poor fertilizer retention capacity and large loss of fertilizer leaching, which is difficult to adopt.
1. Urea deep application can completely avoid burning and burning, and can reduce the loss of volatilization;
2. Urea autumn application, placing the fertilization point in the soil layer with dense roots to provide nitrogen nutrient environment for the crop;
3. Urea autumn application can alleviate the tension during spring sowing, and protect the soil, so that the wheat is broadcast in the high-yield period, and the spring broadcasting initiative is guaranteed.
Second, the urea deep application method:
In the plot to plant wheat in the next year, it is necessary to level the ground in the autumn, and then suppress it after the whole, and reach the sowing state. Fertilization requires that the ground temperature be reduced to about 5 degrees, that is, 10-15 days before freezing, for autumn fertilization. In the coming year, soybeans and corn fields can be combined with autumn ridges to carry out ridges and fertilizers. The core of autumn fertilization is in a deep word, and the depth of fertilization is 10-12 cm. In the autumn, the amount of fertilizer applied is generally 2/3 of the amount of fertilizer applied for autumn application, and 1/3 is applied for spring fertilizer.
Urea autumn application attention timing, fertilization premature urea under the action of urease, converted into ammonium Carbonate and ammonium bicarbonate, easy to decompose and release ammonium, its volatile, large loss; if the fertilization is too late due to soil freezing Go on. Autumn application of urea should adhere to standard operation, no heavy or no leakage, uniform depth, tight soil cover, applied to the head, applied to the side, and should be suppressed after fertilization. Autumn rain is big, the water is too much, it is not suitable for autumn application, the quality of fertilization is not high, and it is better to lose and reduce fertilizer efficiency. Sandy soil has poor fertilizer retention capacity and large loss of fertilizer leaching, which is difficult to adopt.
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