Effects of Different Dressing Rates of Nitrogen Fertilizer on Grain Yield and Quality of Shengdao735  

不同氮肥追施量对圣稻735产量和品质的影响（英文）

作　　者：郭涛 薛芳 杨军 王海凤 林香青 刘奇华 刘宪政 张士永 

机构地区：[1]山东省水稻研究所/山东省水稻工程技术研究中心,山东济南250100 [2]济南绿之风农业科技发展有限公司,山东济南250100

出　　处：《Agricultural Science & Technology》2017年第12期2268-2271,共4页农业科学与技术（英文版）

基　　金：山东省农业科学院农业科技创新工程(CXGC2016A02);公益性行业(农业)科研专项(201403002-1);国家水稻产业技术体系(CARS-01-60)~~

摘　　要：The effects of the dressing rate of nitrogen fertilizer on rice morphological characteristics and grain yield and quality were studied, so as to clarify the optimal dressing rate of nitrogen fertilizer for rice variety Shengdao 735. Six nitrogen appli- cation rates （No （0 kg/hm2）, N1 （69 kg/hm2）, N2 （138 kg/hm2）, N3 （207 kg/hm2）, N4 （276 kg/hm2） and N~ （345 kg/hm2）） were designed. The results showed that with the increase of the nitrogen application rate, the protein content and amylase content of rice increased; the plant height, tiller number, effective panicle number per hill and grain yield increased at first and decreased then; and the grain number per panicle, 1 000-grain weight and taste value decreased. The brown rice rate, head rice rate and chalky kernel percentage did not change significantly. Shengdao 735 gave the highest production in N4 treatment the nitrogen application rate of which was 276 kg/hm2. The result of regression analysis showed that the grain yield and economic benefit were the highest in treatment N4. The nitrogen fertilizer rate of 276 kg/hm2 was suitable for Shengdao 735.以自育优良食味粳稻品系‘圣稻735’为材料,研究了氮肥追施量对其农艺性状、稻谷产量和品质性状的影响。试验结果表明:随着氮肥追施量的增加,‘圣稻735’的蛋白质含量、直链淀粉含量均增加,株高、最高分蘖数、单穴有效穗数和稻谷产量呈先增后降趋势;而穗粒数、千粒质量和食味值则降低,糙米率、整精米率和垩白粒率变化不明显。‘圣稻735’在追施纯氮276 kg/hm^2条件下产量最高,为10 078.5 kg/hm^2。由模拟方程计算可得,‘圣稻735’最大追施纯氮量为279.38 kg/hm^2,此时产量为10 318.5 kg/hm^2,与试验结果相近。因此,‘圣稻735’生产中追施纯氮276 kg/hm^2可获得较高稻谷产量和较好的经济效益。

关 键 词：RICE FERTILIZATION Grain yield QUALITY Shengdao 735 

分 类 号：S511.22[农业科学—作物学]