Intercropping method for reducing diseases of broad beans by regulating and controlling use amount of nitrogen fertilizer

Abstract

The invention discloses an intercropping method for reducing diseases of broad beans by regulating and controlling the use amount of a nitrogen fertilizer, and belongs to the technical field of cultivation of broad beans. Nitrogen is a mineral nutrient element required for growth and development of plants, while normal growth and development of the plants are ensured, a nutrient foundation is provided for growth and development of pathogenic bacteria and colonization of the bacteria, the broad beans and wheat are intercropped reasonably, the wheat has high competitive capacity on soil and nitrogen in a chemical fertilizer, the nitrogen content of rhizosphere soil of the broad beans is reduced to enhance the nitrogen fixing capacity and nitrogen fixing amount of the broad beans, therefore,even if absorption of the broad beans to the nitrogen in the soil is reduced, the nitrogen from the atmosphere in the broad beans is remarkably increased, thus, the overall nitrogen absorption amountof the broad beans is balanced, the use amount of the nitrogen fertilizer in the growth period of the broad beans is regulated and controlled by applying the nitrogen fertilizer for four times and intercropping the broad beans and the wheat, establishment of a basal nutrition of the pathogenic bacteria can be stopped effectively, and therefore, the possibility of disease infection of the broad beans is prevented effectively.

Description

technical field [0001] The invention relates to the technical field of broad bean cultivation, and specifically relates to an intercropping planting method for reducing broad bean diseases by regulating the amount of nitrogen fertilizer. Background technique [0002] Broad bean is an important leguminous crop in the world. It has the characteristics of food, vegetables, feed and green manure, and has a high nitrogen fixation capacity due to its wide adaptability. It is planted in more than 70 countries around the world, with a planting area of ​​up to 260. million hm 2 At present, China's broad bean production area and output rank first in the world, and the planting area and output of broad bean in Yunnan ranks first in my country. However, due to unreasonable nitrogen application, the outbreak and spread of broad bean diseases have caused serious losses to broad bean production. The area decreased sharply, which severely restricted the production of broad bean. Therefore, ...

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Problems solved by technology

[0002] Broad bean is an important leguminous crop in the world. Because it has the characteristics of food, vegetables, feed and green manure, and has wide adaptability, it has a high nitrogen fixation capacity. It is planted in more than 70 countries around the world, with a planting area of ​​up to 260. million hm 2 At present, China's broad bean production area and output rank first in the world, and the planting area and output of broad bean in Yunnan ranks first in my country. However, due to unreasonable nitrogen application, the outbreak and spread of broad bean diseases have caused serious losses to broad bean production. The area has dropped sharply, which seriously restricts the production of broad bean. Therefore, how to apply nitrogen reasonably is of great significance to control broad bean diseases and reduce yield loss.

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