湿度与棉铃虫发生的关系研究

Study on Relationship between Humidity and Number of Cotton Boolworm

利用同在半径5 km区域内连续10年的湿度和棉铃虫（Helicoverpa armigera Hübner）百株卵量的调查资料,分析研究了湿度与棉铃虫发生的关系。结果表明,2月平均绝对湿度和最小绝对湿度均与二代棉铃虫百株卵量呈极显著正相关,11月的定时最小相对湿度与次年二代棉铃虫百株卵量呈显著负相关,11月的月平均绝对湿度和月平均相对湿度与次年二代棉铃虫百株卵量呈极显著负相关,10~12月的5种湿度资料均与次年二代棉铃虫百株卵量呈负相关。建立了5个棉铃虫百株卵量与湿度因子呈显著或极显著相关的回归方程。

The relationgships between humidities and the number of cotton boolworm（Helicoverpa armigera Hübner） by continous ten years dates which goten from where was limited within a circle of five kilometres radius were studied. The results showed that average absolute humidity and minimum absolute humidity in February and 2th cotton boolworm eggs of100 plants appeared all positive correlation extreme obviously, timed minimum relative humidity in November and 2th cotton boolworm eggs of 100 plants in coming year appeared negative correlation obviously, and the month average both absolute humidity and relative humidity and 2th cotton boolworm eggs of 100 plants in coming year appeared all negative correlation extreme obviously, five kinds of humidity dates gotten from October to December and 2th cotton boolworm eggs of 100 plants in coming year appeared all negative correlation. 5 regressive equations which humidity and cotton boolworm eggs of 100 plants correlatting obviosly and above had been maken.