摘要
１９９２年至１９９４年在江苏省扬州、宜兴、金湖、盐城郊区进行试验，结果表明：１）适当提早搁田有刊于稳定穗数提高成穗率，改善群体质量，增加有效叶面积率，增加每穗总粒数，提高抽穗期的单茎茎鞘重和抽穗至成熟期的干物质重量。２）在基蘖肥用量占总施氮量６０％时，总茎蘖苗数达预期穗数８０％时搁田，能显著提高成穗率和群体质量。在Ｎ叶期搁田，并持续１个叶龄期，对Ｎ叶内的分蘖芽长度有抑制作用，茎蘖生长呈迟缓状态。
Experiments were carried out in several sites in Jiangsu Province in 3 years. Results are as follows:1)Draining paddy field in advance properly is beneficial to obtaining stable panicle number, raising percentage of effective tillers and improving population quality, increasing ratios of effective leaf area and total grain numbers per panicle, raising single stem and sheath weight at heading stage and the dry matter weight accumulate from heading to maturing. 2) Under the experiment of the numbers of tillers is about 80% of expected panicle numbers and basetillering fertilizer applied 60% of total, draining paddy field would significantly increase the percentage of effective tillers and population quality. It was clearly shown that draining paddy field at N leaf-age and keeping one leaf-age long would prohibit the length of the tiller bud in N leaf axil, and could make it grow slowly.
出处
《中国水稻科学》
CAS
CSCD
北大核心
1996年第2期95-102,共8页
Chinese Journal of Rice Science
基金
江苏省农业科技基金
关键词
成穗率
穗粒结构
搁田始期
产量
水稻
draining paddy field
percentage of effective tillers
structure of panicle and grain
till bud
