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小麦老来雨是小麦在灌浆后期遇雨,雨后猛晴,气温突然升高,使小麦在1—2天内枯死的现象,也叫“青枯”、“通熟”。一、老来雨的危害与气候近10年来,我省在1977、1980、1982、1987年先后遭到老来雨危害。每次都给小麦带来严重损失。千粒重下降3—5克,亩减产40—50公斤。老来雨已成为华北小麦产区的一大自然灾害。在冀中南地区主要发生在5月底、六月初,正值小麦灌浆后期。
The old wheat rain is the case of wheat in the late filling of the rain, fierce rain, the temperature suddenly increased, the phenomenon of wheat died within 1-2 days, also known as “green”, “common.” First, the dangers of the old rain and climate In the past 10 years, our province in 1977, 1980, 1982, 1987 has been endangering the rain. Every time it causes serious losses to wheat. Thousand grain weight decreased by 3-5 grams, 40-50 kg per mu reduction. Old rain has become a major natural disaster in the wheat growing areas in North China. In Jizhong South region occurs mainly in late May, early June, coincided with the late grain filling.