| 豫北棉区气温与湿度对黄萎病发生的关系分析 |
| |
| 引用本文： | 简杜良,马存.豫北棉区气温与湿度对黄萎病发生的关系分析[J].植物病理学报,1995,25(1):17-22. |
| |
| 作者姓名： | 简杜良 马存 |
| |
| 作者单位： | 中国农科院植保所, 北京 100094 |
| |
| 摘 要： | 1981~1990年连续10年在河南新乡棉花黄萎病重病田。定点、定株,种植同一品种,结果表明:年度间发病有较大差异。从发病轻重与气象因子关系分析,存在两种类型:一种为高温低湿轻病年,10年中有4年,7月30日平均病情指数(简称病指,下同)为15.39。第二种类型为低温高湿重病年,10年中也有4年,7月30日平均病指达33.44,为轻病年的2.17倍。7月份的气温是影响黄萎病发病强度的主要因子,若当年7月份连续两旬旬平均气温超过27℃,病指旬增长速度将会减慢,成为轻病年。在7月份气温较低的情况下,空气相对湿度与病指呈正相关,即7月份湿度超过80%,气温又较低,将成为重病年。
|
| 关 键 词： | 棉花黄萎病 流行规律 气象因子 |
EFFECT OF TEMPERATURE AND HUMIDITY TO COTTON VERTICILLIUM WILT IN NORTHERN HENAN PROVINCE |
| |
| Jian Guiliang Ma Cun Chen Qiying.EFFECT OF TEMPERATURE AND HUMIDITY TO COTTON VERTICILLIUM WILT IN NORTHERN HENAN PROVINCE[J].Acta Phytopathologica Sinica,1995,25(1):17-22. |
| |
| Authors: | Jian Guiliang Ma Cun Chen Qiying |
| |
| Institution: | Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100094 |
| |
| Abstract: | The epidemy of cotton Verticillium wilt was investigated during 1981~1990 in a heavily diseased field at fixed field plots and planted the susceptible cultivar 86-1 in Xinxiang county, Henan province. The results showed that there is a great difference of disease in different years. Two types of the disease years were divided:the first, light disease year with high temperature and low humidity, the wilt index on 30 July being 15.39, and the second, severe disease year with low temperature and high humidity, the will index being 33.44 on 30 July. It occurred 4 in 10 years of each type. It can be seen that the wilt index of latter is 2.17 times of the first. The key factor influencing the development of the disease was the temperature in July of the year. If the ten-day mean temperature in July of two sucessive ten-days is higher than 27℃, the increasing of wilt index could be slowed and it would be a light disease year. There is a direct relation between the humidity and the wilt index:that is the humidity of July was higher than 80%. a severe disease year would occur under low temperature. |
| |
| Keywords: | Cotton Verticillium wilt Epidemy Meteorological factor |
| 本文献已被 CNKI 维普 等数据库收录！ |
| 点击此处可从《植物病理学报》浏览原始摘要信息 |
| 点击此处可从《植物病理学报》下载免费的PDF全文 |
|
