灵武长枣花期2种蓟马种类记述

Description of two thrips species in flowering periodof Lingwu Changzao jujube

为明确灵武长枣花期蓟马的种类,于2020年6月上旬至7月上旬采用五点取样法对灵武长枣枣花上的蓟马进行调查,并对枣树坐果情况进行观察。结果表明:为害枣花的有2种蓟马,一种为花蓟马(Frankliniella intonsa),另一种为西花蓟马(Frankliniella occidentalis),其中花蓟马为优势种。在3个调查地,蓟马成虫发生量峰值均出现在6月中旬。从平均虫口密度看,大秦长枣基地西花蓟马成虫发生量显著高于花蓟马,银湖公司2种蓟马成虫平均虫口密度相近,大泉林场西花蓟马成虫略高于花蓟马。西花蓟马和花蓟马是灵武长枣花期的主要害虫,蓟马成虫种群数量在盛花期最高,其为害会影响枣果坐果率。

In order to determine the species of thrips in the flowering period of Lingwu Changzao jujube,the five-point sampling method was used to investigate the thrips on the flowers of Lingwu Changzao jujube from early June to early July 2020,and the fruit setting of the jujube trees was carried out.Observed.The results showed that there are two kinds of thrips that damage the jujube flowers,namely Western Flower Thrips(Frankliniella occidentalis)and Flower Thrips(Frankliniella intonsa),among which thrips are the dominant species.In the three survey sites,the peak occurrence of thrips adults occurred in mid-June.In terms of the average population density,the adult population of Western Flower Thrips in the Daqin Changzao base was significantly higher than that of Flower Thrips.The average population density of the two species of Thrips from Yinhu Company was similar.The adult population of Thrips in Daquan Forest Farm was slightly higher than that of Flower Thistle horse.Western flower thrips and flower thrips are important pests in the flowering period of Lingwu Changzao jujube.The adult thrips population is highest in the full bloom period,and their damage will affect the fruit setting rate of the jujube.