Screening methods of maize genotypes for improving nitrogen efficiency in maize/soybean intercropping systems

A genotype and nitrogen efficiency technology, applied in plant genetic improvement, botanical equipment and methods, leguminous plant cultivation, etc., can solve problems such as affecting the efficient use of nitrogen, lack of basis for the selection of corn varieties, affecting the nitrogen fixation effect of soybeans, etc. To achieve the effect of improving the overall nitrogen efficiency

Active Publication Date: 2021-09-24
INST OF SOIL FERTILIZER SICHUAN ACAD OF AGRI SCI
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Problems solved by technology

There are significant differences in the nitrogen acquisition capacity and root exudate capacity of different maize varieties, which may affect the nitrogen fixation effect of soybean in intercropping systems, and ultimately affect the efficient use of nitrogen in the entire production system
However, there is currently no basis for the selection of maize varieties in intercropping systems

Method used

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  • Screening methods of maize genotypes for improving nitrogen efficiency in maize/soybean intercropping systems
  • Screening methods of maize genotypes for improving nitrogen efficiency in maize/soybean intercropping systems

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Experimental program
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Embodiment

[0034] This embodiment is mainly completed through two steps.

[0035] 1. Screening of the most suitable deep-rooted, root-secreted flavonoids, and high-yield corn genotypes combined with soybean intercropping is mainly accomplished through the following steps;

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Abstract

The invention discloses a method for screening corn genotypes for improving nitrogen efficiency in corn / soybean intercropping systems, which belongs to the technical field of agricultural planting. Genotype maize varieties with strong ability and high yield of the system, and then divide these maize varieties into deep-rooted, shallow-rooted and soybean intercropping, analyze the physiological mechanism of the difference in nitrogen efficiency in the corn / soybean intercropping system, and then screen out the improved corn / soybean intercropping system Nitrogen efficiency maize genotypes. The invention screens corn varieties with different root configurations and root exudates, studies the underground interaction mechanism of monocropping systems and the effect on nitrogen fixation efficiency of intercropping soybeans, and clarifies the root morphology and physiology of corn varieties suitable for corn / soybean intercropping systems characteristics, can improve the overall nitrogen efficiency of the intercropping system.

Description

technical field [0001] The invention belongs to the technical field of agricultural planting, and in particular relates to a technology for screening corn varieties with different root characteristics to improve the nitrogen efficiency of a corn / soybean intercropping system. Background technique [0002] The intercropping of corn and soybean is a typical configuration representing the intercropping of tall and short stalk crops and pea crops, and it is a dryland planting method with strong adaptability. The jade / bean model has been distributed all over the country before the founding of the People's Republic of China. It is also a new type of high-efficiency multi-cropping intercropping model in dryland that has developed rapidly in Southwest China in recent years. It can increase production and income, increase the biodiversity of farmland ecosystems, and improve nitrogen utilization. It is an important measure to reduce the use of chemical fertilizers. In 2013, the promot...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01H1/04A01G22/40A01G22/20
CPCA01H1/04A01G22/20A01G22/40
Inventor 郭松秦鱼生陈庆瑞陈琨樊红柱喻华曾祥忠上官宇先周子军
Owner INST OF SOIL FERTILIZER SICHUAN ACAD OF AGRI SCI
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