摘要
１９９２～１９９４年在玉溪市刺桐关林区对云南松纵坑切梢小蠹成虫进行了系统的调查。据系统观测，成虫梢转干历期约１４３天；干转梢历期约为１２９天；梢转干的高峰期为每年的１月２４日～２月１０日，计１８天，期间累计成虫数占总虫数的６６．６５％；干转梢高峰为每年的５月５～２５日，计２１天，期间累计成虫数占总虫数的６４．５６％。为便于监测测报，对成虫梢转干。
Form 1992 to 1994, the authors carried out systematic investigation on the abults of Tomicus piniperda in Citongguan forest district of Yuxi, the results of observation indicated that the process of the adults move from tip to trunk lasted about 143 days, and from trunk to tip lasted abour 129 days, the peak period of the adults move from tip to trunk lasted 18 days every year, that is from Jan.24 to Feb. 10 and in this period the number of the adults account for 66.65% of the total pests, the peak period of the adults move from trunk to tip lasted 21 days every year, that is from May 5 to May 25 and in this period, the number of the adults account for 64.56% of the total pests. For easy to monitor and forecast, the phenological phase of local forest tress relevant to the process of adults moving from tip to trunk and from trunk to tip were observed.
出处
《云南林业科技》
CAS
1997年第2期67-71,共5页
Yunnan Forestry Science and Technology
基金
"八五"国家科技攻关课题
