摘要
在农作物病虫防治中,喷药液量的多少对防治效果有较大的影响。三种药剂,三个不同药液浓度试验结果表明:水稻孕穗期防治稻飞虱,在相同用药量下,以每667m2喷药液45kg的防效最好,药后7d的防效为92.52%～96.65%。在生产中,应根据生长期来定喷液量,水稻前期每667m2喷液30kg左右,水稻中后期每667m2喷药液45～50kg;建议不定每667m2的农药使用量,而按农药登记规定的浓度(稀释倍数)稀释喷洒。
In plant protection, the chemical consistency impacts control effect greatly. An experiment by three chemicals and three consistencies was conducted and the results show that in rice booting stage for controlling planthopper, in the same chemical dosage, the application of 45 kg/667m^2 will have the best effect, the control effect after 7d can reach to 92.52%-96.65%. in production, the liquid spraying consistency will be decided by different growth stages, in earlier stage, the application of 30 kg/667m^2 liquid spraying will be rational and 45-50kg in middle and late stages. It is suggested to spray the chemical liquid according to the stated consistency.
出处
《广西农学报》
2009年第3期14-16,共3页
Journal of Guangxi Agriculture
关键词
农药
对水量
防治
效果
Agricultural chemicaL
liquid consistency
prevention ＆ control
effect
