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早稻烂秧的主要原因是秧田连作。长期使用同一块秧田,土壤中病菌残留量大,用养脱节,耕作层变浅,通透性变差,土性变冷,有效养分缺乏。病菌易侵入危害,逐渐扩展蔓延引起大面积烂秧。对这类老化秧田需进行改良。 1、冬前翻耕晒垡,促进土壤熟化:开好田沟,降低地下
The main reason for early rice rotten seedling is continuous cropping. Long-term use of the same seedling, soil bacteria residual large, with raising and losing section, farming layer shallow, permeability deterioration, soil cooling, lack of effective nutrients. Pathogenic bacteria easily invaded, and gradually spread to spread a large area of rotten seedlings. Such aging seedling needs to be improved. 1, winter tillage drying, and promote soil maturation: open a good ditch, lower underground