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滁县是江淮丘陵地区主要稻区之一。一般以中稻栽培面积最广,晚稻次之,早稻較少。水稻螟虫有三化螟、二化螟、大螟三种,其中以三化螟危害最重,二化螟次之,大螟危害最輕。三化螟主要危害中、晚稻,在一般年份里,麦茬中稻白穗率和单季晚稻枯心率均为5—10%;而严重年份白穗率和枯心率可达20—60%,对水稻产量影响很大。因此,及时掌握螟情,并及早防治三化螟,是水稻增产的关键措施之一。螟虫的消长主要决定于气候、食料和天
Chu County is one of the main rice paddy areas in Jianghuai hilly area. Generally the most widely cultivated area in middle rice, followed by late rice, less early rice. There are three rice stem borer rice borers, Sesamia inferens, Sesamia inferens, of which the worst damage by the stem borer, Chilo suppressalis second, Stem borer least harmful. In the normal years, the white spike rate of mid-season rice and single-season late-season rice are all 5-10%; in severe years, the white spike rate and dry heart rate can reach 20-60% Yields have a big impact. Therefore, it is one of the key measures to increase the yield of rice in order to grasp the insects and prevent and cure the stem borer as soon as possible. The growth and decline of stem borers mainly depend on climate, foodstuffs and days