密度、播期、氮肥运筹对寒优湘晴产量和品质的影响  

EFFECTS OF PLANTING DENSITY,SOWING DATE AND NITROGEN FERTILIZER APPLICATION ON YIELD AND QUALITY OF THE HANYOUXIANGQING RICE

作　　者：周永良[1] 陈虹[1] 汪祖国[1] 沈金芳[1] 

机构地区：[1]上海市奉贤区农业技术推广中心,上海201400

出　　处：《上海农业学报》2003年第4期28-32,共5页Acta Agriculturae Shanghai

基　　金：上海市科技兴农重点攻关项目"优质稻米高产保优栽培技术研究与开发"研究内容之一。项目编号 :农科攻字 2 0 0 0第 6~ 5号

摘　　要：为探索密度、播期、氮肥运筹对寒优湘晴产量和品质影响的关系 ,本研究与“优质稻米高产保优栽培技术研究与开发”项目试验基地密切结合 ,于 2 0 0 0、2 0 0 1年探索不同氮肥运筹、不同密度、不同播期对寒优湘晴产量和品质的影响。采用二年试验数据平均值分析 ,表明上海地区寒优湘晴适宜播种期为 5月 1 0～ 2 0日 ,基本苗为 4万 / 6 6 6 .7m2 、氮肥用量为 1 6kg/ 6 6 6 .7m2 、后期穗肥比例为 1 0 %左右。The rice experiments of different amounts of nitrogen fertilizer applied,ratios of nitrogen fertilizer applied at different stages,seeding times and planting densities were carried out between 2000～2001 in order to know about the effects of these practices on the yield and quality of the Hanyouxiangqing rice. The analysis of the two year experimental data showed that the appropriate seeding time for the Hanyouxiangqing rice in Shanghai area was between May 10～20,the number of basic seedling planting density was 40000 plants/666.7m 2,the amount of nitrogen fertilizer applied was 16kg/666.7m 2,and the ratio of nitrogen fertilizer applied at later stage was 10%or so.

关 键 词：寒优湘晴 产量 品质 密度 播期 氮肥 水稻 品种 茎蘖 干物质 叶面积 成穗率 经济性状 

分 类 号：S511.01[农业科学—作物学]