| 二晚旱育播扦期和穗期温度与结实率关系的研究 |
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| 引用本文： | 李会兴,沈枕梅.二晚旱育播扦期和穗期温度与结实率关系的研究[J].江西农业学报,1998,10(1):6-16. |
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| 作者姓名： | 李会兴 沈枕梅 |
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| 摘 要： | 本试验以中熟杂交稻“协优２３７４”为供试组合，采用盆栽，对二晚旱床育秧播期、播量、栽期、栽插深度和抽穗期温度与结实率的关系进行了较为系统的研究，结果表明：适期早播（６月２２～２７日）、稀播（每公顷４５０ｋｇ）、早栽（７月２８日以前），是争取早熟、确保安全齐穗、稳产高产的重要措施。浅栽分蘖早发，熟期提前，穗粒数多，结实率高。抽穗日平均温度与结实率呈正相关，低于２０℃和苞期低温、抽穗期温度回升，结实率均低。
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| 关 键 词： | 旱床育秧 播种期 播种量 移栽期 稳产高产 温度 |
Study on the Relationships between Setting Ratio and Sowing,Transplanting Date and Temperature during Earing Period of Late-season Rice with Seedling Grown at Upland Nursery |
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| Abstract: | As Late-season rice seedling grown at upland nursery, the relationships between setting ratio and sowing date, sowing rate, transplanting date, transplanting depth and temperature during earing period were systemically studied via the pot experiment with mid-ripe hybrid rice variety Xieyou 2374. The results showed that properly early sowing (from June 22 to 27), light seeding (450kg/hm 2) and early transplanting (before July 28) were important to full heading and stable yield, surface transplanting can accelerate tillering and lead to earlier maturation, more spikes, more grains and higher setting ratio, average daily temperature during earing period was positively correated with setting ratio, and the setting ratio was low below 20℃ or under the low temperature while forming pancile with the temperature rising in earing periold. |
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| Keywords: | Rice seedling grown at upland nursery Sowing period Sowing rate Transplanting period Stable and high yield Temperature |
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