论文部分内容阅读
自从福寿螺流入我地以来,繁殖很快,只几年时间,已到处都有,主要生长在田间、沟沿、池塘等,它们主要以草生食物为主,一只雌螺一年可生五至七次蛋,每次产一百多只卵。因此,一对福寿螺一年可产上千只螺仔。福寿螺一般在人们撒秧时就出来危害,吃掉刚发芽的幼苗。有人曾于秧田观察了它们的危害情况:它们成天在秧田间游走,用两只触角视探可采食之物,一旦遇上种苗,一下就搞掉,吃后继续游走,它们所经之处,种子只留下一颗没有芽的谷壳。目前防治福寿螺的农药很少,一般常用的农药杀不死它,可用杀螺灵
Since the snail flowed into my land, the breeding season has been fast and has been taking place for a few years. It has mainly grown in fields, ditch banks and ponds. They mainly produce grass-fed foods. A female snail can produce five to seven Egg, each producing more than 100 eggs. Therefore, a pair of snails can produce thousands of snails a year. Lucky snails generally come out when people seedlings harm, eat just sprouted seedlings. Someone once observed their harm in the seedling fields: they walked all day in the seedling fields, and used two tentacles to see the food to be eaten. Once they met the seedlings, they got rid of it and continued to eat after eating. After that, the seed leaves only a chaff without buds. At present, there are only a few pesticides for the prevention and cure of snails. The commonly used pesticides kill it without killing it.