Fertilization method for high-yield cultivation of winter wheat-summer corn rotation

Abstract

The invention relates to a fertilization method, in particular to a winter wheat-summer corn rotation high-yield cultivation fertilization method. The fertilization method of the present invention comprises: using 600-750 kg / hm2 of base compound / mixed fertilizer in the wheat planting season + topdressing controlled-release urea 150-225 kg / hm2 in the greening period, and changing the traditional wheat wax ripening period to harvesting at the period of maximum wheat grain weight Harvest at the ripening stage; corn planting season adopts one-time seed fertilizer simultaneous sowing, seed fertilizer is controlled release urea 450~600kg / hm2+P2O590~225kg / hm2+K2O90~150kg / hm2, or controlled release BB fertilizer 550~750kg / hm2 hm2, and harvested after the disappearance of the milk line of corn kernels. The fertilization method of the invention can realize year-round balanced yield increase, increase the yield of planting wheat and corn twice a year, and save labor costs. The invention proposes a high-yield fertilization method for winter wheat-summer corn rotation cultivation.

Description

technical field [0001] The invention relates to a fertilization method, in particular to a winter wheat-summer corn rotation high-yield cultivation fertilization method. Background technique [0002] The Huang-Huai-Hai region is the main grain-producing area in my country, especially the typical cropping system of winter wheat and summer corn, which is a two-cropping system in one year, is the main grain planting method in this area. The grain products produced ensure the food security of our country to a great extent, and fertilization is an important measure to improve its yield level. Winter wheat in this area is generally sown in October and harvested in early or mid-June, followed by summer corn in mid-June and harvested from mid-September to early October. Nutrients account for more than 50% of the contribution in the process of increasing grain yield, so the distribution of fertilizer in the rotation cycle of winter wheat and summer maize is particularly important. ...

AI Technical Summary

Problems solved by technology

[0005] In recent years, due to the transfer of most of the rural labor force, especially the young and middle-aged laborers, to the city, the limitation of labor has reduced the frequency of fertilization of wheat and corn, which cannot meet the nutrient requirements of crops.

In addition, the individual plants in the late stage of crop growth are relatively large, which is not suitable for mechanized operations. Farmers often manually sprinkle quick-acting nitrogen fertilizers into the field and combine watering for topdressing in the later period. This method increases the risk of nitrogen leaching downward. , thus affecting groundwater quality, waste fertilizer, and reduce nitrogen use efficiency. Some farmers simply do not carry out this key topdressing due to operational difficulties, thus entering a misunderstanding in production

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