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早稻秧苗水育改旱育后,发生了许多有别于水育秧的新病害,其中发生较普遍的有稻苗黄(白)化病、黄梢僵苗病、恶苗病、立枯病等几种,这些病害常常在旱育秧苗床同时混合发生,给防治带来困难。现将这些病害的识别和防治方法介绍如下。稻苗黄(白)化病。发病症状:早稻旱育秧前期气温过低易受冷害或者苗床过度干燥后浇足水,
After the early rice seedling aquaculture to drought-resistant, there are many new diseases that are different from the water-saving seedlings, which occurred in the more common rice seedling yellow (white) disease, stiff shoots, yellow shoots, blight Several of these diseases are often mixed in the dry seedbed bed at the same time, to prevent the prevention of difficulties. Now the identification of these diseases and prevention methods are described below. Rice seedling yellow (white) disease. Symptoms: early rice dry nursery pre-Yang temperature is too low susceptible to cold damage or over-drying of seedbed after pouring enough water,