超级稻病虫发生特点及其药剂防治技术

Studies on the major characters of the diseases and pest insects on super rice and the control techniques

超级稻从孕穗末至齐穗期如遇上连续阴雨天,稻曲病大发生,纹枯病发生较普遍;二化螟、稻飞虱发生量大,危害较重.在超级稻大田生长期,抓住施药适期,选用高效、内吸、广谱、环保型农药,进行3～4次防治,可有效防控病虫危害,达到节本增效、减少农药污染的目的.

The studies indicated that the continuous overcast and rainy weather during the periods of late booting stage and heading stage of super rice resulted in serious rice false smut and rice sheath blight and severe occurrence of Chilo suppressalis （Walker） and Nilaparvata lugens （Sta^°l）. The damages to super rice were very high. During the period of field planting, application of efficient and environment-friendly pesticides, pesticides via inhalation and pesticides of broad spectrum action for 3 - 4 times in the optimal time could control and prevent the damages by the diseases and pest insects of super rice. The control costs could be saved and the pollution of pesticides could be reduced.