摘要
本研究利用同一地点连续10年的棉铃虫[Helicoverpa armigera(Hübner)]数量和降水的资料,对降雨量与棉铃虫数量的关系进行分析。结果表明,2-4月的月降雨量和一日最大降雨量均与二代棉铃虫百株卵量呈正相关,其中2月月降雨量与二代棉铃虫百株卵量呈显著正相关,2月中旬降雨量与二代棉铃虫百株卵量呈极显著正相关,3月的日最大降雨量、中旬降雨量与二代棉铃虫百株卵量呈显著正相关,3月降雨量≥0.1 mm的日数与二代棉铃虫百株卵量呈极显著正相关。8月的月降雨量与三代棉铃虫百株卵量呈负相关。8月的降雨量、一日最大降雨量及日最大降雨量≥5.0 mm日数与四代棉铃虫百株卵量均呈极显著正相关。8月下旬的降雨量与四代棉铃虫百株卵量的正相关度最高。9月各旬的旬降雨量均与四代棉铃虫百株卵量呈负相关。10月日最大降雨量≥25.0 mm的日数与次年二代棉铃虫百株卵量呈负相关。11月的降雨量和日最大降雨量≥5.0 mm的日数均与次年二代棉铃虫百株卵量呈极显著负相关,且最重要的降雨旬是11月中旬。建立了18个棉铃虫百株卵量与降雨因子相关达显著以上水平的回归方程。
The relationship between precipitation and cotton boolworm [Helicoverpa armigera (Hubner)] was studied by continous ten years dates goten from the same place. The results showed that month precipitation and the biggest precipitation one day in a month from February to April and 2th cotton boolworm eggs of 100 plants appeared positive correlation, and among of the precipitation of February and 2th cotton boolworm eggs of 100 plants appeared positive correlation obviously. The precipitation of the second ten days February and 2th cotton boolworm eggs of 100 plants appeared positive correlation extreme obviously. The biggest precipitation during a day and precipitation during the second ten days and 2th cotton boolworm eggs of 100 plants appeared positive correlation obviously, number of days which precipitation ≥ 0.1 mm appeared positive correlation extreme obviously in March. The month precipitation in July and August and 3th cotton boolworm eggs of 100 plants appeared negative correlation. The month precipitation and the biggest precipitation during a day and the number of the days which precipitation ≥5.0 mm and 4th cotton boolworm eggs of 100 plants appeared all positive correlation extreme obviously. The precipitation during last ten days in August and 4th cotton boolworm eggs of 100 plants appeared highest positive correlation. The precipitation during every ten days in September and 4th cotton boolworm eggs of 100 plants appeared negative correlation. The precipitation of the biggest precipitation ≥25.0 mm during one day and 2th cotton boolworm eggs of 100 plants of coming year appeared negative correlation in October. The month precipitation and number of days which precipitation of the biggest precipitation ≥5.0.0 mm during one day and 2th cotton boolworm eggs of 100 plants of coming year appeared all negative correlation extreme obviously in November. Ten days precipitation of the most important ten days which appeared negative correlation obviosly with 2th cotton boolworm eggs of 100 plants next year was the second ten days in November. 18 regressive equations which precipitation and cotton boolworm eggs of 100 plants correlatting obviosly and above had been maken.
出处
《湖北农业科学》
2016年第13期3340-3348,共9页
Hubei Agricultural Sciences
基金
国家863计划项目(2002AA241021)