水稻病虫危害损失和防治效益评估研究初报  

A preliminary report on the study of losses and control benefit evaluation of rice pests

作　　者：徐海莲 曾宜杰[2] 徐善忠[2] 韦赵海[2] 杨美秀[2] 肖筱成 周晓华 

机构地区：[1]江西省吉安市植保植检局,343000 [2]江西省泰和县植保植检站,343700 [3]江西省玉山县植保植检站,334700

出　　处：《植物保护》2010年第4期148-151,共4页Plant Protection

摘　　要：2005-2008年笔者在早稻、晚稻生长期间进行防治与不防治对比试验。分析试验数据得出:全程不防治平均减产51.26%,常规防治平均增产113.14%,常规防治平均收益4498.58元/hm2,比全程不防治增86.12%,平均投入产出比1:5.18。拟合出单虫或单病在定局时的发生量(或发生率)与其危害损失之间的线性回归模型:稻飞虱每丛虫量(X)与损失率(Y)之间关系式为Y=8.7654+0.0881X;稻纵卷叶螟卷叶率(X)与损失率(Y)之间关系式为Y=1.9341+0.2851X;二化螟发生率(X)与损失率(Y)之间关系式为Y=1.4182+1.0407X;稻瘟病白穗率(X)与损失率(Y)之间关系式为Y=0.3765+0.9004X;纹枯病病株率(X)与损失率(Y)之间关系式为Y=-2.4469+0.2829X,相关分析均达极显著水平。Experiments were carried out in a field divided into pest control and the control plots to study losses and control benefit evaluation of rice pests during early rice and late rice seasons in 2005-- 2008. The results showed that rice production was decreased by 51.26% by pests without control and increased by 113.14% on average by pest control. The income from pest control was 4 498.58 yuan per hm2 on average, increased by 86.12% compared with the control, and the ratio of input and output from pest control was 1：5.18. Linear regression models fitting the relationship between percentage of rice production loss （Y） and pest occurrence （X） of various pests were as followed： Y=8. 765 4＋0. 088 1X for the rice planthopper; Y=1. 934 1-10. 285 1S for the rice leaffolder; Y=1. 418 2＋1. 040 7X for the rice stemborer; Y=0. 376 5＋0. 900 4X for the rice blast; Y=--2. 446 9＋ 0. 282 9X for the rice sheath blight. All of these models were at the level of statistically significant difference.

关 键 词：水稻病虫 防治与不防治对比试验 危害损失 防治效益 评估 

分 类 号：S435.11[农业科学—农业昆虫与害虫防治]