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粟芒蝇又叫粟杆蝇,是谷子产区的重要害虫之一。一般年份谷子被害株率是10—30％,严重年份高达50％以上。近年来随着耕作制度的改革,夏播谷种面积扩大、密度增加,粟芒蝇为害日趋严重,将成为夏谷特别是晚播夏谷生产的主要障。谷子从苗期到抽穗均可受到为害,被害症状有以下三种。 1、枯心苗。谷苗心叶被害后,失水萎蔫、卷曲,干枯后形成炮捻状的枯心苗。 2、畸形穗。被害谷苗的生长点若没有完全受害,尚可抽出一个穗形短小、弯曲,小穗不全、籽粒秕瘪的畸形穗。 3、白穗(死穗)。谷子孕穗期受害若穗轴遭到破坏,抽出的穗即失去开花授粉能力,形成不实的毛掸状的白穗。
Sumatras, also known as poplar fly, is one of the major pests in the millet producing areas. The average annual incidence of millet plants is 10-30%, severe years up to 50% or more. In recent years, with the reform of the tillage system, the area of summer sowing grain has expanded, the density has been increased, and the damage caused by the samara flies has become more and more serious. It will become the main obstacle in the summer cereal production, especially the late sowing summer cereal production. Millet from the seedling to heading can be harmed, the victim has the following three symptoms. 1, withered seedlings. Gu Mia heart leaves were killed, water wilting, curly, dried to form gun twist-like seedlings. 2, abnormal spike. If the growth point of the damaged seedling is not completely harmed, a deformed ear with short, curved, incomplete spikelet and shriveled kernel may be extracted. 3, white spike (dead spike). If the booting damage occurs at the booting stage of the millet, the spike out will lose the flowering and pollination ability and form an unnatural hairy white spike.