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杨叶甲一代卵的发育起点温度及其有效积温的初步研究毕湘虹，张延民，张洁（黑龙江省森林保护研究所）（黑龙江省森林植物园）（黑龙江省森工总局）杨叶甲（Ｃｈｒｙｓｏｍｅｌｅｐｏｐｕｌｉ）是危害杨树、柳树叶部及嫩梢的主要害虫之一。据１９９１～１９９２年在黑龙江...
Preliminary Study on Developmental Start Temperature and Effective Accumulation Temperature of Young Yehjiaobi Egg Generation Bi Xianghong, Zhang Yanmin, Zhang Jie (Heilongjiang Forest Protection Institute) (Heilongjiang Forest Botanical Garden) (Heilongjiang Forest Industry Administration) Chrysomelepopuli is an endangered poplar, One of the major pests of willow foliage and tender shoots. According to 1991 to 1992 in Heilongjiang ...