双季超级稻病虫发生特点及药剂防治技术

Studies on the Occurrence Characters of the Diseases and Pest Insects in Double-Cropping Super Rice and the Control Techniques

以5个早稻和5个晚稻超级杂交稻组合为材料,初步研究了双季超级稻病虫害发生特点和药剂防治技术。结果表明:早稻超级稻福优73、春光1号和晚稻超级稻江四优992、Ⅱ优7599、中优2596二化螟和稻纵卷叶螟的危害较重,晚稻超级稻两优858和中优2596稻飞虱为害较重,所有供试早、晚稻超级稻纹枯病和稻曲病发病较轻。在超级稻大田生长期,选用井冈霉素、苯醚甲环唑、氯虫苯甲酰胺、氟虫双酰胺、氟虫双酰胺.阿维菌素、甲氨基阿维菌素苯甲酸盐、吡蚜酮、吡虫啉等高效、内吸、环保型药剂,抓住适期施药,可有效控制超级稻主要病虫害发生,提高水稻产量。

The occurrence of major diseases and insect pests in double-cropping super rice and the control techniques were studied by using five super hybrid early rice and five super hybrid late rice varieties.The results showed that there was severe occurrence of Chilo suppressalis and Cnappalocrocis medinalis in super early rice Fuyou 73 and Chunguang number 1,super late rice Jiangsiyou 992,ⅡYou 7599 and Zhongyou 2596,severe occurrence of Nilaparvata lugens and Sogatella furcifera on super late rice Liangyou 858 and Zhongyou2596,low occurrence of rice sheath blight（Rhizoctonia solani） and rice false smut（Ustilaginoidea virens） in all the super early and late rice varieties.During the period of field planting,efficient,systemic and environment-friendly pesticides such as jinggangmycin,difenoconazole,chlorantraniliprole,flubendiamide,flubendiamide-avermectins,emamectin benzoate,pymetrozine and imidacloprid in the optimal time could control the damages by the major diseases and pest insects in double-cropping super rice and increase the yield of super rice were increased.