论文部分内容阅读
1993～ 1 996年作者研究了豆田 1 6种可控因素对夏大豆病虫害、天敌和产量的综合效应。根据既控病虫增产又保护生态的原则 ,综合评价了可控因素 ,提出了夏大豆病虫害系统最优控制策略 :同穴 ( 4:1式 )或间作 ( 9:2式 ) ,鲁豆 4 ,6月1 0日前后播种、1 80 0 g/hm2微肥拌种 ,N4 5kg/hm2 ,P2 O560 kg/hm2 ,K2 0 1 50 kg/hm2 ,有机肥 2 2 50 0 kg/hm2 ,甲拌磷 0 .3 6%拌种 ,多菌灵 0 .1 %拌种 ,抗蚜威 60 g/hm2喷雾防治大豆蚜 ,甲基异柳磷颗粒剂 67.5g/hm2撒施中耕防治蛴螬 ,Bt乳剂3 0 0 0 g/hm2喷雾防治食叶害虫和蛀荚害虫。组配了大豆玉米同穴、间作和纯作 3种种植方式的豆田病虫害系统最优控制技术。示范证明 ,系统控制技术具有控制病虫害效果好 ,增产显著 ,天敌显著增加 ,充分保护利用生态控害作用的特点。
From 1993 to 1996, the author studied the combined effects of 16 controllable factors on summer soybean pests, natural enemies and yield. According to the principle of controlling pests and diseases and protecting ecology, the controllable factors were comprehensively evaluated and the optimal control strategies of summer soybean pest system were put forward. The optimal control strategies of summer soybean pest system were as follows: 4: 1 in the same hole or 9: 2 in the intercropping system, , Sowing before and after June 10, 1 800 g / hm2 microtiter seed dressing, N4 5 kg / hm2, P2 060 kg / hm2, K2 0 1 50 kg / hm2, organic fertilizer 2 2 50 0 kg / hm2, Mixed Phosphorus 0.36% seed dressing, carbendazim 0 .1% seed dressing, pirimicarb 60 g / hm2 spray control soybean aphid, methyl isophthalone granules 67.5g / hm2 sowing tillage control bream, Bt Spraying 30 000 g / hm2 emulsion against leaf and pest pests. The optimal control technology of bean diseases and insect pests system was set up with the combination of soybean, pit, intercropping and pure cropping. Demonstration shows that the system control technology has the effect of controlling pests and diseases, increasing yield significantly, natural enemies increased significantly, the full protection and utilization of ecological control characteristics.