水稻纹枯病的损失估计及科学灌水控病试验与示范研究  

Damage estimation of rice sheath blight and the disease controlled test and demonstration with comprehensive irrigation method

作　　者：郑元梅[1,2,3] 杨文清 季加明 姜水贞[1,2,3] 陈元洪 蒋际清[1,2,3] 黄新 廖燕俸 

机构地区：[1]福建省农科院 [2]尤溪县植保站 [3]浦城县临江农技站

出　　处：《福建农业学报》1998年第S1期156-161,共6页Fujian Journal of Agricultural Sciences

摘　　要：１９９５～１９９７年，在闽北小流域的尤溪、浦城县不同水稻品种上按全国农药田间药效试验准则的分级标准抽样调查，测定水稻纹枯病的损失估计。结果表明，病株个体的病级高低与损失呈正相关。应用新复极差测验和以ｙ＝ａｅｂｘ建立曲线关系的分析，病级之间的损失呈显著或极显著差异。对病株群体应用Ｌ理论值估计与实测的损失基本符合。１９９５～１９９８年应用垄栽、畦栽和适时搁田对控制水稻纹枯病试验和示范研究。结果表明，按照水稻不同生育期对水分的要求，严格科学水位管理，控制水稻纹枯病的效果达７０％左右，与井岗霉素１万单位的防效相近。１９９７～１９９８年１００ｈｍ２示范片的病指防效分别为６７．２％～６７．９％（临江）和７８．９％～６３．８％（玉池），Ｌ理论值产量损失为１．１９％～０．８４％。According to disease grade standard of Natinal Experiment Principle for Evaluating Chemicals Efficiency in Field Condition, the damage caused by rice sheath blight,was estimated with sampling investigation in different early rice varieties in Youxi and Pucheng of the small drainge area in north Fujian from 1995-1997 The result indicated that the loss level was positive to the disease grade of individual diseased plant The loss difference among the disease grades were significant or extremely significant, with the analysis of SSR determination and =ae bx equation The loss caused by the diseased plant colony was identical to that of practical determination The control test and demonstration of the rice sheath blight were taken with hill culture, bed culture and interval field draining ,according to the water demand of rice in different growth period, and maintained the water level with comprehensive management The result showed that the controlling efficiency of rice sheath blight was about 70%, that was similar to that of validamycin A 10000 unit The index of disease controlled efficiency in 100hm 2 demonstration field was 67 2%-67 9%(Pucheng)and 78 9%-63 8%(Youxi), The yield loss of L theoretical value was about 1 19%-0 84 % in 1997-1998

关 键 词：水稻纹枯病 产量损失 科学灌水 

分 类 号：S435.111.42[农业科学—农业昆虫与害虫防治]