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稻田蜘蛛是捕食水稻害虫的主要天敌,它的种类很多,数量颇大,约占稻田捕食性天敌的80％左右。1977年11月至1978年5月,我们就稻田蜘蛛的越冬情况进行了调查,目的是为春季选择蜘蛛采集地提供依据。调查是在10亩红花草子留种田内采用定田不定点,平行取样的方法进行的。5天调查一次,每次查6平方尺,七个月共查38次,每次查到的蜘蛛带回室内进行分析鉴定。现将稻田蜘蛛在红花草子田越冬期间的消长情况,简报如下:
Paddy spiders are predators of rice pests predators, its many types, a large number, accounting for about 80% of predatory natural enemies of rice fields. From November 1977 to May 1978, we conducted a survey on the overwintering situation of rice spiders in order to provide evidence for the selection of spiders in spring. The investigation was carried out in 10 acres of safflower grass to stay within the fixed field using fixed point, parallel sampling method. 5 days investigation time, each check 6 square feet, a total of 38 times in seven months, each time to find the spider back to the room for analysis and identification. Now the growth and decline of rice field spiders during the winter of safflower field, the briefing is as follows: