牛角花齿蓟马对苜蓿传粉作用的研究

Study on alfalfa pollination by Odontothrips lati

在田间采用施药接虫隔离、施药不接虫隔离、不施药隔离、对照(不施药不隔离)4种处理方法,研究了牛角花齿蓟马对苜蓿的传粉作用。结果表明,对照处理苜蓿平均结荚数和平均种子产量均高于其余3个处理,分别为340.33个/10茎枝、0.709 1 g/10茎枝。其次为施药接虫隔离处理,其平均结荚数和平均种子产量分别为57.67个/10茎枝、0.175 7 g/10茎枝,是不施药不隔离处理结荚数和种子产量的16.95%和24.78%,表明牛角花齿蓟马对苜蓿有一定的传粉作用,但是传粉作用很微弱,传粉效率不高。

The alfalfa pollination by Odontothrips lati was studied with 4 treatments （pesticide application ＋Odontothrips lati introduced＋ closure, pesticide application＋ no Odontothrips lati ＋ isolation, no pesticide＋ closure, no pesticide＋no closure） in alfalfa field. The result indicated that the pod number and the seed yield under Treatment 4 （no pesticide＋no isolation,alfalfa field was open） were higher （340.33 pods/10 branches and 0. 709 1 g/10 branches）. The next was treatment 1 （pesticide application＋Odontothrips lati introduced＋closure） and its pod number and seed yield were 57.67 pods/10 branches and 0. 175 7 g/10 branches respectively, which were 16.95% and 24.78% of treatment 4. The result suggest that Odontothrips lati had certain pollination to alfalfa,but its pollination efficiency was very low.