Method for preventing and controlling nitrate leaching loss of soil in dry farming land of North China Plain by utilizing mode of interplanting corn and soybean

A nitrate and corn technology, applied in the agricultural field, can solve the problems of reducing the diversity of farmland species and habitats, the low comprehensive utilization rate of land light and heat resources, and the impact of farmland environment and economic benefits, so as to reduce the risk of groundwater pollution and improve The effect of nutrient utilization efficiency and good economic benefits

Inactive Publication Date: 2013-06-12
INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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  • Application Information

AI Technical Summary

Problems solved by technology

The long-term single crop rotation mode of winter wheat and summer maize, especially the long-term monoculture of maize in summer, reduces the diversity of farmland species and habitats, weakens the overall stress resistance and self-regulation function of the agro-ecosystem, and also brings soil quality degr

Method used

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  • Method for preventing and controlling nitrate leaching loss of soil in dry farming land of North China Plain by utilizing mode of interplanting corn and soybean
  • Method for preventing and controlling nitrate leaching loss of soil in dry farming land of North China Plain by utilizing mode of interplanting corn and soybean
  • Method for preventing and controlling nitrate leaching loss of soil in dry farming land of North China Plain by utilizing mode of interplanting corn and soybean

Examples

Experimental program
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Effect test

Embodiment 1

[0024] In this example, from June to October 2010, a comparative study of corn single-cropping and corn‖soybean planting patterns was carried out on a field with more than 50 years of dry farming history in Xushui County, Hebei Province, located in the North China Plain. In farming, "‖" is used to indicate intercropping. For example, intercropping of corn and soybeans is expressed as corn‖soybean, and intercropping of 4 rows of corn and 6 rows of soybeans is expressed as 4 rows of corn‖|6 rows of soybeans. The entire process of the research experiment is closed, and only relevant researchers participate and manage it.

[0025] The whole area of ​​Xushui County belongs to the alluvial plain of the North China Plain. The ground is flat and open, and the natural environment is superior. It belongs to the warm temperate zone monsoon continental climate. Corn-wheat rotation is the main area, which is a typical dry farming area in the North China Plain.

[0026] The method of using...

Embodiment 2

[0035] In this example, from June to October 2011, a comparative study of corn single cropping and corn‖soybean planting patterns with different row ratios was carried out on a field with more than 50 years of dry farming history in Xushui County, Hebei Province, located in the North China Plain. Variety, fertilization, irrigation etc. are identical with embodiment 1. The entire process of the research experiment is closed, and only relevant researchers participate and manage it.

[0036] figure 2It is a schematic diagram of the inter-row position of 4 rows of corn‖6 rows of soybean crops, image 3 It is a schematic diagram of the row spacing of 4 rows of corn‖6 rows of soybean intercropping. In this embodiment, the row spacing of corn strips is 50 cm, and the spacing between plants is 25 cm; the row spacing of soybean strips is 30 cm, and the spacing between plants is 20 cm; the distance between corn and soybeans is 30 cm.

[0037] The comparison of net photosynthetic rat...

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Abstract

The invention discloses a method for preventing and controlling nitrate leaching loss of soil in a dry farming land of North China Plain by utilizing a mode of interplanting corn and soybean. Aiming at the problems that a dry farming land of the North China Plain is rainy and hot synchronously, the fertilizing amount of single culture of corn is large, the residual quantity of nitrate nitrogen in soil is large, the risk of nitrogen leaching loss is very high, the method effectively controls nitrate leaching loss of soil by interplanting corn and soybean summer sowing season. According to the invention, appropriate irrigation is performed during sowing; open type management is adopted during the growing period of crops; optimized fertilization is performed to corn bands and soybean bands respectively; the fertilizing amount is subjected to the local recommended fertilizing amount of corresponding crops, and fertilizer is applied between rows of corresponding crops; and during the critical growing period of the crops, if rain water is sufficient, irrigation is not performed, and if no rain comes or rain water is insufficient, appropriate irrigation is performed. The method can be implemented to effectively prevent and control the risk of nitrate pollution of a dry farming land of North China Plain, and has relatively remarkable economic benefits and environmental benefits.

Description

technical field [0001] The invention belongs to the field of agricultural technology, and in particular relates to a method for preventing and controlling nitrate leaching from dry field soil in the North China Plain by using the intercropping mode of corn and soybeans. The method reduces nitrogen fertilizer application by intercropping corn and soybeans, and efficiently utilizes residual soil from previous crops Nutrients and exogenous nutrients, reducing the risk of nitrate pollution in groundwater. Background technique [0002] At present, more and more people in the world are concerned about the quality of surface water and groundwater, and the pollution of nitrate to groundwater has attracted special attention in many countries (Hu Guochen, Zhang Qingmin, Wang Zhong, etc. Research on the prevention and control of nitrate nitrogen pollution in groundwater[J ].Agricultural Environmental Protection, 1999, 18(5): 228-230; Xing Guangxi, Shi Shulian, Du Lijuan, etc. Status of...

Claims

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Application Information

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IPC IPC(8): A01G1/00
Inventor 张继宗张亦涛刘宏斌任天志尹昌斌王洪媛翟丽梅
Owner INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
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