屎克螂适宜的繁殖条件初步研究

STUDIES ON FITTING REPRODUCTIVE CONDITION OF CATHARSIUS MOLOSSUSL.

１９９１—１９９４年对屎克螂适宜的繁殖条件研究结果：１．土层４０ｃｍ和６０ｃｍ的平均温度分别为１５．９２±６．３４℃和１５．８９±６．０８℃；平均土壤含水量分别为２６．７０±３．７４％和２３．７２±１．８８％，使各虫态处于一个几乎恒温恒湿的条件，有利于生长发育与越冬，２．土壤含水量１７％、２０％、２２％、２６％和２９％，其产卵最多的深度分别在６５─７０ｃｍ，７５─８０ｃｍ，６５─８０ｃｍ，６５—８０ｃｍ和３５—５０ｃｍ，分别占产卵总数的３４．１６％、４２．４２％、６８．４２％、５５．４０％和９０．５６％。３．不同土壤的产卵深度，沙壤土以土下４５—５０ｃｍ处最多，占产卵总数的３４．７８％；沙土以６５—８５ｃｍ最多，占产卵总数的８６．６７％；粘土以４５—６０ｃｍ最多，占产卵总数的５１．１１％。

on the natural conditions,the average depth of laying egg of Catharsius molossus insandy loam was 44.42± 4.67cm.Under ground,when the depth was 40cm and 60cm,theminimum temperature was 6℃,and the maximum was0.6 25.9℃.The annual average oftemperature was 15.92± 6.34℃and 15.89±0.08℃,and the water content was 26.70±6.34%and 23.72±1.88%,which could make all stages of the insect on the soil condition ofthe constant temperature and humidity,When water content in soil is 17%,20%,22%,26%and 29%,most eggs could be found in the depth of 65─70cm,75─80cm,65 80cm,65 80cm and 35 50cm respectively. As far as soils,it laid more eggs at the depth of 45 50cmin sandy loam, 65 85cm in sandy soil and 45 60cm in clay,and the egg percent was 34.78%,86.67%,and 51.11%,respectively.