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2011~2012年,针对南方水稻黑条矮缩病开展了水稻全生育期组合用药防病技术研究,得出防效较理想的湖南省中、晚稻用药方案:种子用25 g/L咯菌腈FS及350 g/L噻虫嗪FS进行消毒处理;秧苗抛栽前2~3 d喷施1次40%氯虫·噻虫嗪WG;大田返青期喷施1次48%毒死蜱EC、10%吡虫啉WP;分蘖盛期施用1次300 g/L苯甲·丙环唑EC、50%吡蚜酮WG;破口前3~7 d施用1次300 g/L苯甲·丙环唑EC、40%氯虫·噻虫嗪WG、50%吡蚜酮WG;齐穗期施用1次300 g/L苯甲·丙环唑EC、50%吡蚜酮WG。节药、增效技术对南方水稻黑条矮缩病防效高达93.90%~98.01%。同时,可有效防控水稻其他主要病虫为害。与常规施药技术相比,其用药量减少77.87%~79.89%,稻谷产量和种稻效益分别增加18.57%~52.43%、4 960.89~6 985.89元/hm2。
From 2011 to 2012, the combination disease-preventing technology of rice during the whole growth period was studied for the southern rice black-streaked dwarf disease, and the medium and late rice dosage regimen of Hunan with better control effect was obtained. The seed was treated with 25 g / L fludioxonil FS and 350 g / L thiamethoxam FS. Seedlings were sprayed with 40% chloroquine and thiamethoxam once 2 to 3 days before throwing the seedlings. 48% chlorpyrifos EC and 10% Imidacloprid WP; once 300 g / L propiconazole EC and 50% pymetrozine WG were applied at the tillering stage; once every 300 g / L of levofloxacin EC was applied 3 to 7 days before breaching, 40% chlorantraniliproxen WG WG, 50% pymetrozine WG; at the heading stage, 300 g / L benzopirone EC and 50% pymetrozine WG were applied once. Section medicine, synergistic technology on southern rice black-streaked dwarf disease control effect as high as 93.90% ~ 98.01%. At the same time, it can effectively prevent and control other major pests and diseases of rice. Compared with the conventional pesticide application, the dosage decreased by 77.87% -79.89%, and the yield and efficiency of paddy rice increased by 18.57% -52.43% and 4960.89-6.885.89 yuan / hm2, respectively.