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鹿邑县观堂公社属于平原低洼地区,在“农业学大寨”的高潮中,随着农田水利建设事业的蓬勃发展,开挖沟河甚多,这对于粮棉超产上《纲要》起着重大作用。这些沟河多设有水闸,排蓄兼顾,平时水流极缓,河内水草丛生,几乎布满河面,成为该地唯一传疟蚊种中华按蚊的主要孳生场所。怎样
Luyi County Guan Temple commune belongs to the lowland areas of plains, in the climax of “agriculture learn Dazhai”, with the vigorous development of farmland water conservancy construction, digging ditches are many, which for the “outline” of grain and cotton overproduction play Great effect. These ditches are mostly equipped with sluice gates. Both drainage and accommodation are normal, and the water current is extremely slow. Water and grass in Hanoi are almost covered with rivers and become the only breeding ground for the mosquito species Anopheles sinensis in the area. how