采用室内饲养方法,研究了取食茶树不同成熟度的叶片对茶尺蠖发育与生殖的影响。结果表明,取食嫩叶有利于茶尺蠖产卵量的增加,成叶有利于茶尺蠖幼虫生长发育,老叶则不利于茶尺蠖取食,尤其对低龄幼虫影响更大。从茶尺蠖生命表参数的变化来看,成叶较有利于茶尺蠖种群的发展,老叶上茶尺蠖种群发展最慢。但是,3种叶片均能维持茶尺蠖完成世代循环。不同茶树叶片化学物质含量分析表明,氨基酸、水分含量是影响茶尺蠖生长发育的主要营养因子。相关性分析显示,茶尺蠖不同发育阶段对叶片营养需求有所不同,嫩叶和成叶的营养成分对茶尺蠖发育存在互补的可能。
The effects of young tea leaves, mature tea leaves and old tea leaves on development and fecundity of Ectropis oblique Prout were studied in laboratory. The results showed that young tea leaves increasing the amount of E. oblique Prout eggs. The mature tea leaves were beneficial in development of E. oblique larvae. The old tea leaves were not suitable to feeding of E. oblique larvae. The effects were greater on E. oblique young larvae. From the perspective of the changes of life table parameters, the mature leaves were favorable for the development of the E. oblique population. The development of E. oblique population was the slowest on the old tea leaves among the three kinds of tea leaves. These three kinds of leaves were all able to maintain the life cycle of the tested insect. The analysis of the chemical contents of tea leaves indicated that the contents of amino acids and water were the main factors affecting growth and development of E. oblique. The results of correlation analysis showed that nutritional needs on leaves were different in the different developmental stages of E. oblique. The nutrition in the young leaves and mature leaves maybe played a complementary role in the development of E. oblique.
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