超级稻再生栽培留桩时间高度收获成熟度比较试验初报

A comparative experiment of stubble-remaining time stubble-remaining height and harvest maturity for super rice ratoon

为探索超级稻再生栽培技术,设立留桩时间、留桩高度和收获成熟度3个对比试验。试验结果表明:早稻在8成5成熟收获留桩的发芽分蘖快、再生能力强、产量较高;早稻收割后3～4d留桩的再生效果最好;再生留桩最理想高度是6～8㎝。

In order to explore super rice ratoon cultivation technology, three plots esperiment of stubble-remaining time,stubble-remaining height and harvest maturity was conducted. This experiment results show that When early rice is harvested at 85% maturity, its germination, tillering, regeneration capability and yield of ratoon rice are best; and when waiting time after harvesting early rice is about 3～4 days , regeneration capability and yield of ratoon rice are best; and most suitable height of rice straw after harvesting early rice is 6～8cm.