摘要
本文应用灰色局势决策(也称灰色系统决策)确定单季稻纹枯病最佳防治适期,在考虑通过防治达到纹枯病病情指数低、成本省和亩产高三个目标前提下,对分蘖期、拔节期、孕穗期和齐穗期分别使用C—125(简称C药)和井岗霉素(简称井药)两种农药采取防治一次、二次、三次三种方案,结果表明:井药的防治效果比C药好;孕穗期使用井药一次,防治效果最好;用药一次比用药二次,三次,防治效果显著。
In this paper, a grey situation decision-making is used to decide the optimal time to prevent and cure leaf blight of single harvest rice. Our goals of the prevention and cure are: (1) The disease index is reduced to the lowest, (2) The total cost is cut down to the minimum. (3) The output becomes high. This grey deeision-mahing question has many goals. The results are showed that effect of pesticide 'Jinggangmeisu' is better than that of 'C-12s' and the best effect will be got if 'Jinggangmeisu' is used once in boot stage.
出处
《灾害学》
CSCD
1989年第3期29-35,共7页
Journal of Catastrophology
