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为了探索水稻主要病虫综合危害对水稻产量的影响,2010年在四川的纳溪区、盐亭县、金堂县3个不同的生态稻区,采取7个不同防控病虫处理进行田间小区试验以及运用不同方法测算各处理水稻产量损失。结果表明:①从对纳溪区、盐亭县、金堂县小区和大田普查结果来看,不同生态区水稻病虫发生的种类及严重度是不同的。但是,水稻螟虫和纹枯病是常发的。稻瘟病、稻曲病和稻纵卷叶螟不是常发性的。②从完全不防治区的结果来看,常年水稻病虫发生造成的损失是很大的。仅对3个县损失测定来看,一般为117.6～157.0 kg,平均损失在135 kg左右;③农民习惯防治区的损失病虫发生为害也较重,其产量损失率在6.16%～11.34%,平均为8.12%;大田普查的结果为8.58%,这说明尽管农户也进行了防治,但是其防治技术水平还很不够。
In order to explore the impact of the major pests and diseases of rice on the yield of rice, seven different ecotypes of rice in Naxi, Yanting and Jintang counties of Sichuan Province were used in 2010 to conduct field trials And using different methods to calculate the yield loss of each treatment. The results showed as follows: (1) According to the census results of Naxi, Yanting and Jintang counties, the species and severity of rice pests and diseases in different ecological zones were different. However, rice stem borer and sheath blight are frequent. Rice blast, rice false smut and rice leaf roller are not common. ② From the results of completely non-control area, perennial pests and diseases caused by the loss is great. Only for the three counties, the average loss was about 117.6 ~ 157.0 kg, and the average loss was about 135 kg. (3) The loss of pests and diseases in peasants habitual control areas were also serious and the yield loss rate was between 6.16% and 11.34% An average of 8.12%. The result of the census of Daejeon was 8.58%, which shows that despite the prevention and control of peasant households, the level of prevention and control technology is still not enough.