摘要
研究东方真叶螨的生物学特性、有效积温和种群动态.结果表明：在18～30℃范围内,发育速率随温度的升高而加快,发育历期随温度的升高而缩短.在22.5～27.5℃范围内,雌成螨寿命8～10 d,雄成螨寿命4～6 d.雌成螨有明显的＂护卵＂习性.分别用最小二乘方法、直线回归法、最小变异系数法和直接最优法计算了该螨的发育起点和有效积温,并预测了年发生代数.4种方法的结果无显著性差异.该螨1年有2次发生高峰：第1次在5月下旬至6月中旬;第2次在9月中旬至下旬,以第1次高峰螨口数量最大,危害最重.
It was studied that the biology, effective accumulate temperature and population dynamics of Euteranychus orientalis. The results showed that in 18 - 30 ℃, the development duration decreased and the development rate increased with temperature increasing; in 22.5 - 27.5℃, the life-span of female adult mite was 8 - 10 d and the life-span of the male adult was 4 - 6 d. The females have significant behavior of ＂protecting their eggs＂. The development zero （ C）, effective accumulate temperature （K） and generation number in a year were calculated by least square method, linear regression method, least variation coefficient method and directed optimization method. Results of the four methods had no significant different. Amount of the mite appeared 2 peaks in a year. The first peak was from the last ten-day period of May to the middle ten-day period of June ; the second peak was from the middle ten-day period to the last ten-day of September. In the first peak the amount of the mite appeared largely and injuring was serious.
出处
《林业科学》
EI
CAS
CSCD
北大核心
2006年第5期89-93,共5页
Scientia Silvae Sinicae
关键词
东方真叶螨
生物学特性
"护卵"习性
有效积温
Eutetranychus orientalis
biological characteristics
habit of ＂protecting eggs＂
effective accumulate temperature
