防护林科技
防護林科技
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PROTECTION FOREST SCIENCE AND TECHNOLOGY
2014年
11期
29-30
,共2页
松毛虫%越冬%死亡率%环境条件
鬆毛蟲%越鼕%死亡率%環境條件
송모충%월동%사망솔%배경조건
Dendrolimus punctatus%overwintering%mortality%environmental conditions
通过对阜新地区松毛虫越冬情况调查，结果表明：温度变化、坡向不同、地面覆盖程度对松毛虫越冬自然死亡率影响很大，低温、阴坡、暴露覆盖物均能有效使松毛虫越冬自然死亡率提高，其中低温年份比正常年份死亡率提高71.1个百分点，阴坡死亡率是阳坡的1.2倍，完全暴露地块的死亡率为44.9%，明显高于有覆盖物地块。
通過對阜新地區鬆毛蟲越鼕情況調查，結果錶明：溫度變化、坡嚮不同、地麵覆蓋程度對鬆毛蟲越鼕自然死亡率影響很大，低溫、陰坡、暴露覆蓋物均能有效使鬆毛蟲越鼕自然死亡率提高，其中低溫年份比正常年份死亡率提高71.1箇百分點，陰坡死亡率是暘坡的1.2倍，完全暴露地塊的死亡率為44.9%，明顯高于有覆蓋物地塊。
통과대부신지구송모충월동정황조사，결과표명：온도변화、파향불동、지면복개정도대송모충월동자연사망솔영향흔대，저온、음파、폭로복개물균능유효사송모충월동자연사망솔제고，기중저온년빈비정상년빈사망솔제고71.1개백분점，음파사망솔시양파적1.2배，완전폭로지괴적사망솔위44.9%，명현고우유복개물지괴。
Overwintering activities of Dendrolimus punctatus in Fuxin Region were investigated.Result shows that:the effects of temperature variation,different aspects,mulching degree on natural mortality of overwintering Den-drolimus punctatus are great;low temperature,shady slope,exposing the mulches all can increase the natural mor-tality of overwintering Dendrolimuspunctatus,among which the mortality in the year with low-temperature increase by 7 1 .1% than that in the normal year ;the mortality rate of shady slope is 1 .2 times as large as sunny slope;the mortality rate of completely-exposed-plots is 44.9%;it is significantly higher than that with mulches.
