Wheat, summer and corn, two crops, balanced fertilization, increase production and increase efficiency

In order to give full play to the effect of fertilizer and increase the grain yield, we have studied the "law of nitrogen and phosphorus balance in wheat and summer crops and the continuous high-efficiency fertilization technology", and formed the heavy-duty application of phosphate fertilizer before the two-crop system of wheat and summer maize. After the heavy application of nitrogen fertilizer, nitrogen and phosphorus balanced fertilization technology system, and proposed a simplified calculation formula based on the total crop yield of the previous year to determine the nitrogen and phosphorus fertilization amount of wheat in the next year. After 5 years of fixed-point demonstration, the yield per unit of production reached ton of grain, which increased by 9.4% to 23.8% compared with the average high-yield field, and the nitrogen utilization rate increased by about 14%.

First, fertilization technology

1. Apply organic fertilizer to the feet. In order to ensure that the wheat straw and the corresponding grain nutrients are returned to the field (about 10 kg of pure nitrogen and 5 kg of phosphorus pentoxide), all the organic fertilizer is applied before the wheat is planted.

2. The former heavy application of phosphate fertilizer. Phosphate fertilizer is mainly applied to wheat before planting, accounting for 3/4 of the total application rate, and phosphorus application in corn seedling stage accounts for 1/4.

3. Apply heavy nitrogen fertilizer afterwards. Nitrogen application takes a small proportion of wheat, and corn accounts for a large proportion, with a ratio of 1:2 or 2:3, all applied to wheat jointing and corn flare period.

4. Nitrogen and phosphorus balanced fertilization. In the farmland of less than 35 kg per 667 square meters of nitrogen per year (including machine nitrogen), the total nitrogen application rate of wheat and corn is 35-37 kg, and the phosphate fertilizer is 8-10 kg. For farmland with a production level of “tons of grain”, the total fertilization amount of wheat and corn in the next year can be determined according to the total output of wheat and corn in the previous year. Total nitrogen application rate of wheat and corn (including organic nitrogen) = total wheat and corn production in the previous year × 3÷80, phosphorus application rate = total wheat and corn production in the previous year was ÷100.

Second, suitable for promotion

1. The soil is deep and the irrigation conditions are good. The soil quality is generally required to be loam, the soil layer is more than 200 cm, the wheat is about 350 kg per 667 square meters, and the farmland with about 400 kg of corn can be applied.

2. The technology is suitable for the intensive production of wheat and corn. The basic seedlings per 667 square meters of wheat are about 200,000, and the corn is 4,000 to 4,500 per 667 square meters.

3. This technology should not be applied in rainy areas, and it is suitable for promotion in Huanghuaihai area and northwest area. (Zhu Hongmin, Agricultural Bureau of Shanting District, Zaozhuang City)

Intelligent Control Butterfly Valve

Zhejiang Heshuo Technology Co., Ltd , https://www.hosuocn.com