不同规格的福寿螺对干湿环境的响应

Response of different sizes of Pomacea canaliculata to dry and wet environment

为系统研究农业防治中不同规格的福寿螺(Pomacea canaliculata)对干湿环境的响应,进行越冬试验和水旱轮作试验。结果表明,在无水的环境中,幼螺、中螺和成螺的存活率分别为91.33%、83.00%和72.67%,且明显高于有水环境中的60.00%、46.00%和38.67%。两种环境下成螺的越冬死亡率均为最高。在水旱轮作中,前茬旱地作物对幼-中螺的防效分别为63.4%(大豆)、68.4%(玉米)和57.4%(辣椒),均高于成螺的防效。

In order to systematic study the response of different sizes of Pomacea canaliculata to dry and wet environment in agricultural control, both overwintering experiment and paddy-upland rotation experiment were conducted. The results showed that the survival rate of small, middle and large Pomacea canaliculata were 91.33%, 83.00% and 72.67% without water, respectively. They were higher than that within water, which were 60.00%, 46.00% and 38.67%, respectively. The mortality of large Pomacea canaliculata were highest no matter within or without water. In paddy-upland experiment, the control effects of previous crop on small-middle ones were 63.4%(soybean),68.4%(maize) and 57.4%(pepper), respectively, which were higher than those of adults.