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Method for determining southwest hill dry-land winter wheat and summer corn optimal water storage soil moisture preservation wheat water and fertilizer efficient utilization

A technology for winter wheat and summer corn, applied in the formulation of high-yield, high-quality, green and safe production technology schemes for wheat in southwest wheat regions, can solve problems such as soil productivity decline, achieve the effects of saving phosphorus fertilizers, improving water use efficiency, and increasing crop yields

Inactive Publication Date: 2019-07-19
SICHUAN AGRI UNIV
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Problems solved by technology

Long-term application of chemical fertilizers leads to a decrease in soil productivity, and no-tillage is not a sustainable pre-sowing tillage model for all farmland ecosystems

Method used

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  • Method for determining southwest hill dry-land winter wheat and summer corn optimal water storage soil moisture preservation wheat water and fertilizer efficient utilization
  • Method for determining southwest hill dry-land winter wheat and summer corn optimal water storage soil moisture preservation wheat water and fertilizer efficient utilization
  • Method for determining southwest hill dry-land winter wheat and summer corn optimal water storage soil moisture preservation wheat water and fertilizer efficient utilization

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Embodiment Construction

[0035] In order to make the technical solution and advantages of the present invention clearer, the solutions of the present invention will be further described in detail below in conjunction with the embodiments.

[0036] The principle of the present invention will be described in detail below in combination with tables and pictures. A green production technology for water storage, moisture conservation and efficient utilization of water and fertilizer includes the following steps:

[0037] Step 1: Experiments were carried out at the test base in Renshou County, Sichuan Province from 2015 to 2017 with different straw mulching and different farming methods. First, the weather station automatically recorded the daily rainfall during the wheat growth period, and at the same time measured the wheat before sowing and after harvesting. and the absolute water content of soil at different growth stages, and the variation of ΔSWS in different growth stages was calculated according to Eq...

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Abstract

The invention discloses a method for determining southwest hill dry-land winter wheat and summer corn optimal water storage soil moisture preservation wheat water and fertilizer efficient utilization.The method is characterized by including the steps: firstly, determining an optimal returning period of corn straws; secondly, determining an optimal farming technique; thirdly, determining an optimal nitrogen management scheme; fourthly, combining the optimal returning period of the corn straws, the optimal farming technique and the optimal nitrogen management scheme to perform demonstration andpopularization in different ecological points to obtain an optimal water storage soil moisture preservation wheat water and fertilizer efficient utilization method. A cultivation and management technique is provided with a technical method for determining southwest hill dry-land winter wheat-summer corn optimal water storage soil moisture preservation wheat water and fertilizer efficient utilization by calculating field evapotranspiration, soil carbon nitrogen ratio, root system structures and wheat yield. An optimal technical mode acquired by the scheme is tested for 4 years, test results show that by the technique, absolute moisture content of soil can be improved by 10%, the yield of wheat is increased by 61.4%, moisture use efficiency is improved by 86.9%, and nitrogen absorption andutilization efficiency is improved by 45.9%.

Description

technical field [0001] The invention relates to a method for determining the optimal water and fertilizer utilization of winter wheat-summer corn in the hilly and dry land of southwest China, and particularly relates to the formulation of a high-yield, high-quality, green and safe production technology plan for wheat in the southwest wheat region. Background technique [0002] The southwest wheat region is the third largest wheat region in my country. The wheat in this region is mainly distributed in the hilly dry land. The rainfall in the wheat growing season is only about 130 to 200mm. Due to the rise of large grain growers, the winter wheat-summer corn planting model has developed rapidly in recent years due to the convenience of mechanization. Under this model, there is still nearly two months of autumn slack between summer maize harvest and winter wheat sowing. Excessive soil transpiration caused by autumn slack and soil drought due to lack of effective precipitation in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G7/00A01G22/20
CPCA01G7/00A01G22/20
Inventor 杨洪坤樊高琼高仁才陈松鹤李晗陈任华陈艳琦陈玉锋向晓玲
Owner SICHUAN AGRI UNIV
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