论文部分内容阅读
观察比较了再生稻根系形态和机能的品种间差异以及与产量的关联性 ,结果表明 ,汕优明 86的根系形态发达 ,机能高而持久 ,头季和再生季产量都最高 ;汕优 6 3的根量和机能次之 ,双季产量居次 ;特优 70头季根系发达 ,但成熟期机能骤降 ,再生季齐穗后根系机能逐渐衰竭 ,头季高产而再生季低产。说明选用根系形态发达、机能高而持久的品种 ,是确保再生稻双季稳定高产的基础。
The results showed that the root morphology of Shanyouming 86 was well developed with high function and long lasting, with the highest yield in both the first season and the second season. Shanyou 6 3 The root volume and the function of the root system were the second, and the yield of the double crop was the highest. The root system of Teyou 70 was developed, but the function of the root of Teyou 70 in the mature season declined sharply. The results showed that the selection of roots with well-developed, high-performance and long-lasting varieties is the basis for ensuring stable and high-yielding double cropping of ratoon rice.