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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。
Based on the field experiments and surveys of the project sites in Youxi County and Pucheng County from 1995 to 1997, the integrated management of major pests and diseases such as the combination of disease-resistant cultivars and fitness cultivation, the combination of field pest monitoring and the protection of natural enemy populations Optimization of technical mode, in 1997 ~ 1998, this model were used to demonstrate 100hm2. The results showed that the use of chemical pesticides decreased by 68.5% -76.6% (Youxi) and 63.6% -71.1% (Pucheng), of which the use of bactericide decreased by 68.6% -97.6% (Youxi) and 92.1% ~ 100% (Pu City). The control of pests and diseases is below the economic threshold, in which the rate of rice blast is 0 ~ 1.37% on average, that of rice sheath blight is 75.3% and 65.8% on average, respectively, and the theoretical yield loss of L is 1 .19% and0.84% respectively. The stem borer spikes were0.04% and0.01%, respectively. The rice leaf roller borer was extremely vulnerable. The ratio of planthoppers and natural enemies in the field in 1997 and 1998: Pucheng early rice were 0.2503 and 0.7794 respectively, while late rice was 0.0671 and 0.1102. Youxi early rice was 0.1480 and 0.9444 respectively, while late rice was 0.3421 and 0.1531. Rice planthopper population density Control below the control indicators to maintain a corresponding balance of pests and beneficial insects. Obtain obvious economic benefits, social benefits and ecological benefits.