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多因子试验结果表明:水稻纹枯病、稻瘟病、稻螟粘虫稻苞虫的发生危害程度、蜘蛛数量消长、绒茧蜂茧块密度和水稻产量等,均与稻田管理措施中的水、肥、密和杀虫剂、杀菌剂的施用次数,存在显著的非线性数量关系。根据试验结果进行模拟、优化组合,获得了五套成都平原水稻主要病虫害综合防治技术措施。经田间验证从控制主要病虫的总体生态效果、技术经济投入和产出的利润分析排序表明,综防措施优于传统化学防治。与对照相比,可减少氮肥用量20～45％、杀虫剂50％以上,降低投入74.85～130.05元/hm~2;增加纯收入122.1～486.9元/hm~2。同时,综防区蜘蛛密度平均增加1.44倍;绒茧蜂茧块数提高11.61～28.90倍。
The results of multivariate tests showed that the incidence of rice sheath blight, rice blast, rice stem borers and insects, the spider population growth and decline, the callus population of calluses and the yield of rice were all the same with the water, Fertilizer, dense and insecticides, fungicides, the number of applications, there is a significant non-linear quantitative relationship. Based on the results of the experiment, the simulation and optimization were combined to obtain five sets of comprehensive measures for prevention and control of major pests and diseases of rice in Chengdu Plain. Field validation from the overall control of the main ecological effects of pests and diseases, technical and economic input and output analysis of profit shows that comprehensive prevention measures better than the traditional chemical control. Compared with the control, the dosage of nitrogen fertilizer could be reduced by 20-45% and the insecticide by 50% or more, and the input could be reduced by 74.85-130.05 yuan / hm 2; the net income increased by 122.1-486.9 yuan / hm 2. At the same time, the integrated spider density increased by 1.44 times; the callus of calluses increased by 11.61 ~ 28.90 times.