摘要
以D优527为材料,研究了不同种植方式下不同施钾量对水稻群体质量和产量的影响。结果表明,常规耕翻插秧水稻有效分蘖期最短、群体茎蘖数和有效穗最低,但LAI和干物质积累整体表现较大,产量最高(10.7×103kg/hm2),比常规耕翻抛秧免耕抛秧和免耕高桩抛秧分别高3.62%、1.58%和1.88%;常规耕翻抛秧和免耕抛秧有效分蘖期、有效穗和LAI接近;免耕高桩抛秧有效生育期最长,最高苗和有效穗最多,LAI和干物质积累整体表现较小随着施钾量的增加,稻谷产量随之增加,且钾肥对水稻有效分蘖期、茎蘖数、LAI和干物质积累具有一定的促进作用。
Effects of potassium fertilizer on population quality and grain yield of rice were studied by using D You 527 as the material. The periods for producing effective tillers, numbers of tillers and effective panicles with the conventional tillage ＆ transplanting mode were the least, and those with the no-tillage with high standing stubbles ＆ broadcasting mode were the most. The periods for producing effective tillers, numbers effective panicles and LAI under the conventional tillage ＆ broadcasting mode were close to those with the no-tillage ＆ broadcasting mode. The grain yield of the conventional tillage ＆ transplanting mode was 10.7 x 103 kg/hm2 ,3.62%, 1.58% and 1.88% higher than those of the conventional tillage ＆ broadcasting mode, the no-tillage ＆ broadcasting mode and the no-tillage with high standing stubbles ＆ broadcasting mode, respectively. Increase of the dosage of potassium fertilizer increased the grain yield. In addition, it was positive to increase the period for producing effective tillers, numbers of tillers, LAI and dry matter weight by increasing the dosage of potassium fertilizer.
出处
《作物杂志》
CSCD
北大核心
2009年第4期68-71,共4页
Crops
基金
国家粮食丰产科技工程(2006BAD02A05)
关键词
水稻
种植方式
群体质量
产量
Rice
Planting modes
Population growth
Grain yield
