肚倍人工增产若干技术措施研究

Studies on many technical measuresfor increasing ball yielda gall yield

摘要:

在青麸杨人工纯林中，采取生荒法以优化肚倍蚜侨蚜及冬寄主生境，可使肚倍蚜春迁蚜上树率增加３８．４倍；在倍树树杈处缠绕细茅草，能有效的助长和保护肚倍蚜春迁蚜的上树，使其单株平均结倍数量及产量分别增加２．６倍和２．５倍；选植复叶为１３小叶类型的青麸杨，其自然单个倍重高于其他小叶数类型；采用合理修剪、重度疏花、摘心控梢、环割节留技术，能有效地促进肚倍单个与群体重量及质量的提高。

Abstract:

The galls on tree Rhus potaninii Maxim,resulted by aphid,Kaburagia rhusicola Takagi,have long been recognized as a valuable forest by-product in mountain areas. A project on approaching a few new technique measure for increasing gall yield hasbeen carried out in Zhushan regions in Hubei province since 1994. The preliminary results show that improing aphid's overwinter habits by retaining shrubs and herbs undertrees can help migrant aphids to locate on trees in the next spring,with locating percentage 38.4 times higher than that of trees without shrubs and herbs. Protecting springmigrant aphids by binding some herbs around the tree branch part can also result in 2.6times and 2. 5 times increase in gall number per tree and yields, respectively. Gallweights on tree variety with 13 compound leaves are significantly greater than any otherkinds of varieties. In addition,timely pruning,rarefying flowers,cutting a groove arounda tree base part and thus preserving fluids are found to be effective means for increasinggall quality and yield.