再生稻幼穗分化特性及发苗技术研究  

Study on the young ear differentiation character and the technology of sprouting for ratooning rice

作　　者：冉茂林[1] 熊洪[1] 洪松[1] 张乃洪[2] 陈应平[2] 刘华忠 

机构地区：[1]四川农科院水稻高粱研究所,四川泸州646100 [2]泸县农业局,四川泸县646000

出　　处：《西南农业学报》2002年第2期28-33,共6页Southwest China Journal of Agricultural Sciences

摘　　要：调查了再生稻发苗困难的原因 ,对再生稻幼穗分化及发苗技术进行了研究。结果表明 ,再生稻发苗受稻桩营养、病虫害、品种特性、倒伏、干旱等多种因素综合影响。再生稻幼穗分化从低节位开始 ,各节位分化速度差异大 ,头季稻成熟时穗分化最高为第 4期。再生稻穗分化与茎叶生长、抽穗开花等生理现象同步进行。再生稻发苗在头季稻实行健身栽培的前提下 ,促芽肥NPK配合 ,辅以化学调控剂 ,能实现再生稻平衡发苗 。The reasons for difficult sprouting,young ear differentiation and sprouting technology of ratooning rice were studied The result showed that sprouting of ratooning rice was affected synthetically by many factors such as rice stump nutrition,plant disease and insect pests,seed characteristics,lodging,drought and ect Young ear differentiation of ratooning rice was from low stem to up stem Differentiation speed had large difference in each stem The highest differentiation happened at the fourth stage while the main crop harvested Young ear differentiation of ratooning rice synchronized with the growth of stem and leaf,heading and flowering of main crop Under good main crop cultivation conditions,and combined application of NPK with manure and chemical regulators ratooning rice can get balance sprouting and stably higher yield

关 键 词：发苗技术 再生稻 幼穗分化 发苗生理 化学调控 水稻 

分 类 号：S511[农业科学—作物学]