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1980年以来,白背飞虱成为我县水稻上的主要害虫。做到科学合理地用药,经济有效地控制危害,就需有合理的经济防治指标。1986年起,我站参加了白背飞虱种群发展与生态关系研究协作组。在协作组的指导下,进行了连续三年的损失测定研究。测定采用大田罩笼的方法。品种为早籼青秆黄和汕优6号。测定结果表明,白背飞虱在穗期危害,主要影响稻谷的千粒重和结实率。虫量与损失率的关系均呈极显著相关。经协方
Since 1980, whitebacked planthopper has become a major pest on rice in our county. Achieve scientific and rational use of drugs, economic and effective control of hazards, we need to have a reasonable indicator of economic control. Since 1986, I participated in the White Detachment of Siphonosis Population Development and Ecological Relationship Research Collaboration. Under the guidance of the collaborative group, a three-year loss study was conducted. Determination of the use of field cage method. Variety of early indica Qinghuang yellow and Shanyou 6. The results showed that the whitebacked planthopper infestation at the heading stage mainly affected the 1000-grain weight and seed setting rate of rice. The relationship between the amount of insects and the loss rate showed a very significant correlation. After the party