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农作物遭受虫害后一定条件下出现增产,这一超越补偿现象引起人们极大兴趣。明确超越补偿后,不仅可以大幅度提高害虫的经济阈值(必要防治密度),减少农药用量,保护生态环境,还可改革栽培措施,显著提高产量质量。在现代栽培条件下,超越补偿是广泛存在的。这些作物包括棉花、秋葵、蕃茄、马铃薯、瓜类、豆类、蔬菜、果树以及粮食作物等。决定超越补偿的内外因素主要有作物的品种特性、生长发育阶段、
Crop yield increased under certain conditions after being affected by pests. This over-compensation phenomenon has aroused great interest. Clearly beyond the compensation, not only can significantly increase the economic threshold of pests (the necessary control density), reduce the amount of pesticides, protecting the ecological environment, but also to reform the cultivation measures, significantly improve the yield and quality. Under modern cultivation conditions, overcompensation is widespread. These crops include cotton, okra, tomatoes, potatoes, melons, beans, vegetables, fruit trees and food crops. The main internal and external factors that decide to go beyond compensation include crop variety characteristics, growth and development stages,