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广安县在杂交水稻制种过程中采用一套以防为主、防治结合的措施,把病虫危害损失减少到最低限度,平均每亩制种208.6公斤。其防治技术是: 1.种子消毒。用链霉素100万单位,兑水5～7.5公斤,浸种4～6公斤,浸种24小时,消除种子上带的白叶枯病和其它病菌。 2.秧田期每亩用呋喃丹1.5～2公斤,防治稻蓟马,因呋喃丹有内吸作用,药效时间长,还可兼治一代二化螟。在3～4叶期喷施一次稻瘟灵,每亩100克,兑水60公斤喷雾防治苗稻瘟。
Guang’an County in the hybrid rice seed production process using a set of prevention and control measures to reduce the pest damage to a minimum, an average of 208.6 kilograms per mu seed production. The prevention and treatment technology is: 1. Seeds disinfection. With streptomycin 1 million units, watered 5 ~ 7.5 kg, soaking 4 to 6 kg soaking for 24 hours to eliminate the seed borne bacterial blight and other bacteria. 2. Seedling field with carbofuran 1.5 to 2 kg per acre, prevention and treatment of rice thrips, due to fufangdan systemic effects, long duration of efficacy, but also to cure a generation of Chilo suppressalis. Spraying once in 3 to 4 leaves of rice blast, 100 grams per mu, watered 60 kilograms spray control rice blast.