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本文运用灰色系统理论,分析研究了棉田插种油菜,油菜的蚜虫招引繁殖七星瓢虫,用瓢虫控制棉蚜以保护棉花免受蚜害的灰色系统控制问题。得到了用其它理论难以得到的动态情况下的有效瓢蚜比ψ≈1:120的定量关系,并为改善系统的外控制提供了依据。
In this paper, gray system theory was used to analyze the gray system control of aphids in rapeseed and rapeseed in cotton fields. The ladybug was used to control cotton aphid to protect cotton from aphids. The quantitative relationship of effective Aphis gossypii ψ ≈1: 120 was obtained under other dynamic conditions that were difficult to obtain by other theories and provided a basis for improving the external control of the system.