Water-saving high-yield cultivation method for winter wheat

Abstract

The invention provides a water-saving high-yield cultivation method for winter wheat. The method comprises the steps of holding water content before planting; optimizing soil preparation; optimizing fertilization; and optimizing irrigation. Compared with a traditional planting mode, the cultivation method has the advantages that one-time irrigation is saved in the later period, so that investment in the whole growth period is not obviously increased, but the yield is relatively high, the water consumption is relatively low, and the whole input-output ratio is the highest. By adopting the cultivation method, good soil fertility and moisture conditions are created for growth of the winter wheat before planting, and the winter wheat is promoted to form enough group and strong seedlings before winter; and a relatively high kernel number per spike is obtained through sufficient fertility supply after a slow-release nitrogen fertilizer is adopted, thereby obtaining the highest yield and input-output ratio. Above all, by adopting the method provided by the invention, 446.5m<3> underground water can be saved for per hectare, the method has positive significance for the Haihe plain which is seriously lack of water, soil wind erosion of a wheat field can be significantly reduced and the average soil erosion intensity is reduced by 69.9% in comparison with a conventional cultivation mode.

Description

technical field [0001] The invention belongs to the technical field of crops, in particular to a water-saving and high-yield cultivation method for winter wheat. Background technique [0002] The Haihe Plain is located in the northern part of the North China Plain, also known as the Hebei Plain. It is one of the main winter wheat producing areas in my country. The annual sowing area is about 2.4 million ha, accounting for 15% of the total wheat sowing area in the country. It is of great significance to ensuring national food security. The Haihe Plain is one of the resource-based water-scarce areas in China, with per capita and mu per mu water resources being one-seventh and one-ninth of the country's respectively. Especially during the wheat growth period, the precipitation is 100-120mm, which is less than a quarter of the normal growth water requirement of wheat. Over the years, wheat production in the Haihe Plain has been maintained by overexploitation of groundwater, wit...

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Problems solved by technology

At present, there are many studies on the irrigation period, irrigation amount and its effect on yield and water saving, but there are more researches on how to construct and comprehensively use the systematic cultivation system to achieve water saving and high yield in wheat fields, as well as the mechanism of water saving and high yield and the benefit evaluation of the system. few

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