Application Studey On The Gray System Theory In The Agricultural Promotion

The crops production system which was consisted by the crop variety, the ecological environment and the cultivation measure was the main research object, the research proposed the agricultural extension gray system. By the way of contrasting the crop variety field plot experiment and the big area which as demonstration, utilized statistics investigation research techniques, took grain production of Hubei province as the key point, took the high quality paddy rice and the high quality rape superiority agricultural product new variety new technology promotion as the core, utilizing gray system theory, the research proposed the agricultural extension gray system analysis method, has established the agricultural extension gray system connection, the decision-making, the forecast and the control model, promoted the agricultural extension quantitative, the simulation, the optimization and the scientific style. Main results as follows:1. Studied the agricultural extension gray system characteristic. Introduced the gray system theory, elaborated the connection of the gray system theory and agricultural extension research.2. Developed the agricultural extension gray appraisal application way. Through the paddy rice and the rape variety comparison test, has established the paddy rice and the rape variety synthesis character gray appraisal model. The gray connection quantitative analysis result indicated that, the system connection of high quality rape new variety 26B 25B ZU6 27B ZU1 was big, the comprehensive character performance was outstanding should be paied key attention, should expand the demonstration further. The system connections of high quality early rice new variety 107 Jinyou158,Jinyou91,Xianyoul39 was very big, it was 0.6748 0.6698 0.6469 0.6327 respectively, indicated its synthesis character performance was super. High quality center rice new variety system connection was Liangyoupei9 > Chaozhayou2> Wuxiang201 > Wujing201, indicated the high quality center rice new variety synthesis character displays Liangyoupei9 was the best and Wujing201 was worst.3. Developed the agricultural extension pessimistic decision-making application way. By the grey decision-making method, has studied the new technology of choosing variety of the anti- scorpion and disease hybrid rice. The result indicated that, the anti-insect spectrum of the anti- insect hybrid rice combination was broad, main high resistant to the second generation snout moth's larva, third larva ,big larva, rice round leaf larva and rice bud insect; Disease-resistant hybrid rice combination with high...