LISA-水稻主要病虫综合治理的优化技术模式

The optimized technical model of LISA integrated control on major rice pests

１９９５～１９９７年分别在尤溪县和浦城县项目点的田间试验和调查基础上，总结以抗病品种和健身栽培相结合，田间害虫监测与保护天敌种群数量相结合等主要病虫综合治理的优化技术模式，于１９９７～１９９８年应用这个模式分别示范１００ｈｍ２。结果表明，减少化学农药使用量６８．５％～７６．６％（尤溪）和６３．６％～７１．１％（浦城），其中杀菌剂使用量减少６８．６％～９７．６％（尤溪）和９２．１％～１００％（浦城）。病虫危害控制在经济阈值以下，其中稻穗瘟病率平均为０～１．３７％，水稻纹枯病防效平均分别为７５．３％和６５．８％，Ｌ理论值产量损失分别为１．１９％和０．８４％；螟害白穗分别为０．０４％和０．０１％；稻纵卷叶螟危害极轻度；１９９７和１９９８年示范片田间稻飞虱与天敌数量比值：浦城早稻分别为０．２５０３和０．７７９４，晚稻为０．０６７１和０．１１０２；尤溪早稻分别为０．１４８０和０．９４４４，晚稻为０．３４２１和０．１５３１；稻飞虱虫口密度控制在防治指标以下，保持了害虫与益虫相应平衡。取得明显的经济效益、社会效益和生态效益。

The optimized technical model of LISA integrated control was sumed up,in view of field test and investigation by combined disease resistant varieties with health cultivation, natural enemies population protection according to insect pest investigation in field, the test and demonstration were conducted at the project site of Youxi and Pucheng from 1995 to 1997 The technical model was demonstrated in 100hm 2 from 1997 to 1998,and the result showed that the chemicals applied amount was dropped 68 5% to 76 6%(Youxi) and 63 6% to 71 1%(Pucheng) yearly, among the fungicide applied amount was dropped 68 6-97 6%(Youxi) and 92 1-100%(Pucheng) The panicle diseased ratio of rice blast was 0-1 37% The controlling efficiency of rice sheath blight was 75 3% to 65 8% The yield loss of L theoretical value was 1 19% to 0 84% The white panicle caused by rice borer was 0 04% to 0 01% The damage of rice leaf-roller was very low The ratio of rice planthopper to natural enemies was 0 2503 to 0 7794 at early rice, 0 0671 to 0 1102 at late rice in Pucheng,and 0 1480 to 0 9444 at early rice, 0 3421 to 0 1531 at late rice in Youxi The damage of major disease and insect pest were controlled below planed economic index The technical model is easy to operate It can achieve decreasing environmental pollution as well as decreasing chemicals-applied amount, balancing damage and benefit insect in a good ecosystem as well as protection nature enemy , and getting the effect of economic, social and ecological benefit