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以常耕抛栽水稻为对照,从叶面积大小、剑叶光合速率与衰老、库的大小及源库比率等方面研究了免耕抛栽水稻的源库特性。结果表明,与常耕抛栽水稻相比,免耕抛栽水稻各生育期的叶面积指数和叶片干物质分配比率较大,抽穗后叶片衰老较慢,光合能力强,有利于干物质生产与积累,免耕抛栽水稻的粒叶比较高。因此,免耕抛栽水稻的源库协调能力较强,有利于获得比常耕抛栽水稻更高的产量。
In this study, the characteristics of source-sink of rice in no-tillage and throwing cultivation were studied in terms of leaf area, leaf photosynthetic rate and senescence, size of sink and source and sink ratio. The results showed that leaf area index and leaf dry matter partition ratio of no-tillage and throwing rice at each growth stage were higher than those of the paddy-cast rice at normal tillering stage. Leaf senescence after heading was slower and photosynthetic ability was good, which was in favor of dry matter production Accumulation, no-tillage throwing planted rice grain is relatively high. Therefore, no-tillage cast-off rice source and sink coordination ability is strong, is conducive to obtaining a higher yield than the castrated rice.