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褐稻虱是水稻的主要害虫之一。它前期发生隐蔽,后期暴发。但也不难解决,关键在勤检查,早发现,适时治,是完全可以控制的。褐稻虱发生期预测一、短期预测短期预测指预测某一虫态的峰期,提供掌握适时防治之用。褐稻虱产卵部位,随水稻的生育期不同,而有变化。多数产卵在离水面的叶鞘上,少数产在叶片的中肋。其卵痕初期是淡绿色水渍状,成线条形,后期变褐色,细看卵痕上有卵帽
Brown planthopper is one of the major pests in rice. It occured in the early stage, the latter part of the outbreak. But not difficult to solve, the key in ground inspection, early detection, timely treatment, is completely controllable. Prediction of brown planthopper occurrence One, short-term forecast Short-term forecast refers to predict the peak of a worm state, to provide timely control of the use. Brown planthopper spawning sites, with the different growth stages of rice, but there are changes. Most lay eggs on the surface of the leaf sheath, a few produced in the blade rib. The egg is an early pale green water-like stain-like, into a line-shaped, late brown, fine eggs look on the egg hat