水稻病虫防控节药增效技术适用性研究

2014年采用大区试验示范，研究了水稻病虫防控节药增效技术在江华瑶族自治县（南方水稻黑条矮缩病重发区）及醴陵市（机插秧稻区）的适用性。结果表明，在南方水稻黑条矮缩病及机插秧稻区，水稻病虫防控节药增效技术能有效控制南方水稻黑条矮缩病、纹枯病、稻纵卷叶螟、二化螟及稻飞虱的危害，对其防效分别达95.70%~100.00%、60.36%~84.84%、80.73%~90.41%、95.77%和74.31%~82.06%。此外，该技术的用药量比常规施药技术减少55.62%~78.25%，种稻效益增加209.73~289.35元/667 m2。

Adaptability of Prevention and Control Techniques for Increasing Rice Income and Reduc-ing Pesticide Usage on Main Diseases and Insect Pests in Rice

Large scale field trials were conducted to investigate the adaptability of prevention and control techniques for increasing rice income and reducing pesticide usage on main diseases and insect pests in rice (hereinafter referred to as the new techniques) in Jianghua(outbreak area of Southern rice black-streaked dwarf virus(SRBSDV))and Liling(mechanical transplanting rice area) in 2014. The results showed that the main diseases and insect pests, including SRBSDV, Rhizoctonia solani (Kühn), Cnaphalocrocis medinalis(Guenée), Chilo suppressalis(Walker) and Nilaparvata lugens(Stal)could be prevented and controlled effectively, and the control efficacies were 95.70%~100.00%, 60.36%~84.84%, 80.73%~90.41%, 95.77% and 74.31%~82.06%, respectively. Pesticide usage of the new techniques was reduced by 55.62%~78.25% compared with the normal techniques. However, the rice income from the new techniques was increased by 209.73~289.35 yuan/hm2 compared with the normal techniques.