为明确10％甲维·溴虫SC对豇豆蓟马的防治效果,开展了室内毒力测定和田间药效试验.试验结果表明,甲氨基阿维菌素和溴虫氟苯双酰胺以8:2混配具有明显的协同增效作用,混配的共毒系数为218.1,二者以8:2配比复配得到的10％甲维·溴虫SC用药量1000、1500、2000倍液,药后1 d对豇豆蓟马的防效分别为90.97％、88.12％和85.68％,其中1000倍液药后1 d的防效与100 g/L溴虫氟苯双酰胺SC无显著性差异,药后1、3、7 d防效与5％甲氨基阿维菌素EC和25％噻虫嗪WDG防效差异显著.10％甲维·溴虫SC可用于花期后、豆荚期防治豇豆蓟马,推荐用药量1000～1500倍为宜.

针对20％双丙环虫酯·联苯菊酯悬浮剂对番茄烟粉虱的效果开展药效试验.结果显示:20％双丙环虫酯·联苯菊酯悬浮剂对番茄烟粉虱有较好的效果,在烟粉虱发生初期和盛期,用药量为10～15 mL/667 m2,间隔14 d喷施1次,防效达到86.36％～90.25％,优于对照药剂.

对0.1％噻虫胺·氯虫药肥混剂防治甘蔗螟虫和蓟马的效果进行试验.结果显示:0.1％噻虫胺·氯虫药肥对甘蔗螟虫和蓟马均有较好的效果,对螟虫的防效与剂量之间存在正相关,对蓟马的防效不同剂量的差异不显著.0.1％噻虫胺·氯虫药肥可用于防治甘蔗螟虫和蓟马,推荐用量为450 ga.i/ha,在甘蔗播种时直接撒施于植沟中,排蔗种后覆土.

在广西水稻种植区,水稻橙叶病的发生为害有加重的趋势.据前期调查及田间观察发现,秧田期和大田初期可能是防治水稻橙叶病的关键时期.本研究主要评价了毒氟磷不同剂型、剂量在秧田期和大田初期处理对水稻橙叶病的防控效果.结果显示:毒氟磷悬浮剂和毒氟磷可湿性粉剂对水稻橙叶病有较好的效果,施药量为有效成分含量200～270 g/hm2的防效达到77％～90％,显著优于施药量为有效成分含量54 g/hm2的对照药剂宁南霉素水剂.本研究为今后田间防控水稻橙叶病提供了技术支撑.

30％毒氟磷可湿性粉剂,20％毒氟磷悬浮剂,30％毒氟·吗啉胍可湿性粉剂,防控南方水稻黑条矮缩病的效果进行了试验.结果 显示:毒氟磷相关药剂对南方水稻黑条矮缩病有较好的防控效果,在水稻移栽初期预防,用药量270～340g a.i/hm2,防效达到58.4％ ～ 74％,略优于对照药剂,其中20％毒氟磷悬浮剂340g a.i/hm2效果最好.

The water- dispersible granules of 70% azoxystrobin was mainly studied. Through systematically screening process of the mainly different additives, such as filler, dispersant, wetting agent, and binder, the formula of 60% trifloxystrobin . hexaconazole water - dispersible granules was finally selected, which was making of trifloxystrobin 20%, hexaeonazole 40%, wetting agent Morwet IP 3%, dispersant NNO 4%, dispersant butyl benzene suffonie acid sodium salt 3%, binder PVA 0. 8% , disintegrate ammonium, corn starch making up. The formula＇s suspension rate was over 80% , and other indicators were qualified. The results of field efficacy were the same as the conventional formation.

以25g/L多杀菌素SC和45%吡虫啉ME作为对照药剂,进行60g/L乙基多杀菌素SC防治豇豆蓟马田间药效试验。结果表明,60g/L乙基多杀菌素SC1000倍液、1500倍液、2000倍药后3d对豇豆蓟马的防效分别为97.3%、95.1%和90.2%,药后7d对豇豆蓟马的防效分别为95.6%、92.1%和86.9%,显著优于25g/L多杀菌素SC和45%吡虫啉ME,且对豇豆安全。

20% ivermectin · flubendiamide suspension concentrate was successfully researched. Through selecting lots of adjuvants, the optimum prescription was determined, Ivermectin 6. 7%, Flubendiamide 13.3%, TERSPERSE 2500 2%, BY -140 2%, SP- SC29 2%, propylene glycol as antifreeze 4%, the magnesium silicate aluminum 1% , xanthan gum 0. 1%, defoamers organic silicon 0. 2%, and deionized water made up to 100%. The indoor virulence determination showed that the ratio of ivermectin and flubendiamide was 6. 7 ： 13.3, and had obvious synergies on leafroller.