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天津小站稻从1949年以来稻热病流行逐渐严重。1954年发病程度虽相对减轻,但仍是影响水稻产量的唯一病害。现把我们对稻热病的初步了解及防治意见,介绍如下.一发病时期1.叶病:6月下旬在秧田内最先发现,栽秧过于晚的,在还苗(秧苗返青)期抗病力差也会受病。7月中下旬是叶病流行的盛期,初由局部点片地方以至蔓延到整坵或全田。8月上旬叶病流行逐渐停止。2.穗颈节病:8月下旬,抽穗快齐时,有的稻
Tianjin Station rice epidemic since 1949, rice fever gradually worse. Although the relative reduction of the incidence in 1954, it is still the only disease that affects the yield of rice. Now we have a preliminary understanding of rice fever and prevention and treatment advice, described below .A period of onset 1 leaf disease: late in June in the seedling first discovered, planted too late, in seedling (seedling green) Poor disease will be affected. The middle and late July is the peak of leaf disease epidemic, initially by the local film sites and even spread to the entire hill or the whole field. In early August leaf epidemic gradually stopped. 2. Pancreaticosis: late August, heading fast Qi, some rice