豫南水稻螟虫发生和为害情况

• 作 者: 沈彩雲 张秀芸 曹景贤
• 机 构: 河南省信阳农业试验站,河南省信阳农业试验站,河南省信阳农业试验站
• 出 处: 华中农业科学
• 发表日期: 1956年06期
• 关键词: 水稻螟虫 豫南 三化螟 大螟 水稻区 淮河以北 淮河以南 海拔高度 旱稻 枯心

豫南位于北纬32度左右,东经114—116度,海拔高度79公尺,年降雨量1,000毫米,主要是水稻小麦一年两熟的轮作地区。稻田面积约600万亩,大部分是在淮河以南与大别山以北之间。淮河以北几县种植部分水稻与旱稻。 水稻螟虫在豫南有三化螟、二化螟和大螟三种(其中以大螟最少)。水稻区历来螟害严重,特别

The south of Henan Province is located at about 32 degrees north latitude, 114-116 degrees east longitude and 79 meters above sea level. The annual rainfall is 1,000 millimeters, mainly in the area where rice and wheat are harvested twice a year. The paddy field covers an area of ​​about 6 million mu, mostly between the south of the Huaihe River and the north of the Dabie Mountains. Some counties north of the Huai River planted some rice and upland rice. Rice stem borers in southern Henan have three borer, Sesamia inferens and Sesamia inferens (of which the least Sesamia internodes). Rice has always been a serious pests, especially