挂放两次性蚜对盐肤木结倍效果的影响

通过对盐肤木挂放两次性蚜试验，调查挂放后结倍数量，产量及结倍枝条数量、每个枝条结倍复叶数量、结倍叶序等。总结出挂放两次性蚜不但可以提高倍子在盐肤木上分布的均匀度，增大倍子体积，增加结倍枝条数量及提高致倍百分率，而且结倍数量和产量分别比挂放一次性蚜提高９３．１％和１１７．０４％。

EXPERIMENTS OF PUTTING SEXUAL APHIDS TWICE AFFECTTING CHINESE GALLNUT FORMING RESULT OF SUMMER HOST

The traditional mode of Chinese qallnut production is putting sexual aphids once.In recent years,the authors found that putting sexual aphids twice could improve the formation of the Chinese qallnut.In 1994,the authors made some experiments about putting sexual aphids twice.At last the result showed that this technique(putting sexual aphids twice)could improve regular extent that Jiaobei was destributed in the summer hosts,increase volume of Jiaobei,and increase quantity of branches of Jiaobei distribution and the percent of Jiaobei formation. By using this technique,the quantity increased 93.1% and the output increased 117.04%.