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A method for determining the optimal water and moisture storage and moisture conservation of winter wheat-summer maize in the dry land of southwest hills

A technology for winter wheat and summer corn is applied in the field of formulating high-yield, high-quality, green and safe production of wheat in southwestern wheat areas, and can solve problems such as soil productivity decline, and achieve the effects of saving phosphate fertilizer, improving water use efficiency, and increasing yield

Inactive Publication Date: 2021-10-15
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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  • A method for determining the optimal water and moisture storage and moisture conservation of winter wheat-summer maize in the dry land of southwest hills
  • A method for determining the optimal water and moisture storage and moisture conservation of winter wheat-summer maize in the dry land of southwest hills
  • A method for determining the optimal water and moisture storage and moisture conservation of winter wheat-summer maize in the dry land of southwest hills

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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 the optimal water storage and moisture conservation of winter wheat-summer corn in the dry land of southwest hills, and the method for efficiently utilizing water and fertilizer for wheat is characterized in that the method comprises the following steps: step 1, determining the best period for returning corn stalks to the field; step 2, Determine the optimal farming technology; Step 3, identify the optimal nitrogen management plan; Step 4, combine the optimal corn stalk returning period, optimal farming technology and optimal nitrogen management plan to demonstrate in different ecological points The popularization is the method of efficient utilization of water and fertilizer for optimal water storage and moisture conservation of wheat. The cultivation management technology described is a technical method for determining the optimal water and moisture storage and moisture conservation of winter wheat-summer maize in southwest hilly dry land obtained by calculating field evapotranspiration, soil carbon-nitrogen ratio, root system structure and wheat yield traits. After 4 years of experiments, the optimal technical model obtained through this program has been proved: this technology can increase the absolute moisture content of the soil by 10 percentage points, increase the wheat yield by 61.4%, increase the water use efficiency by 86.9%, and increase the nitrogen absorption and utilization efficiency 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. Wheat in this region is mainly distributed in hilly and dry land, and the rainfall during 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...

Claims

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Application Information

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Patent Type & Authority Patents(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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