灌溉排水学报2017，Vol.36Issue(12)：1-7,7.DOI:10.13522/j.cnki.ggps.2017.12.001
灌溉方式和施氮量对水稻产量和品质的影响
The Effects of Irrigation and Nitrogen Application on Grain Yield and Quality of Rice
摘要
Abstract
Taking two japonica rice varieties,Xindao22 and Xindao10,cultivated in the Yellow River as the mod-el plants,this paper investigated the impact of irrigation and nitrogen application on their yield and grain quality. We examined two irrigation methods-conventional irrigation(W)and controlled irrigation(D)and four nitrogen levels, 0 kg/hm2(CK) 90 kg/hm2(LN), 180 kg/hm2(MN), and 270 kg/hm2(HN). The results showed that the yield increased with nitrogen application and the yield under MN treatment maximized in 2015. In comparison with the CK,the yield of Xindao22 and Xindao10(mean of all N treatments)decreased by 10.5% and 12.6% in 2015,and 2.1% and 0.8% in 2016,respectively,while there was no significant difference among the two irriga-tion methods. Irrigation and nitrogen application did not have noticeable impact on rice processing quality and appearance quality.The starch content in the grains increased first and then decreased as nitrogen application in-creased;the concentration of crude protein was positively correlated with the nitrogen application,and was high-er under control irrigation than under conventional irrigation;The content of starch and its components showed inconsistency between the two varieties and there was no significant difference between the two irrigation treat-ments. The activity of key enzymes GOT and GPT involved in nitrogen metabolism was positively correlated with nitrogen application,and the activity of SS,SSS,ADPGase and Q enzymes involved in carbon metabolism decreased under HN treatment and the difference was significant among the treatments. The Q enzymes and GOT activity increased significantly under control irrigation compared with conventional irrigation.Higher yield was achieved with 180 kg/hm2 pure N application under control irrigation and processing quality improved, while the appearance quality varied with the two varieties.关键词
水稻/灌溉方式/产量/品质/碳氮代谢Key words
rice/irrigation method/yield/quality/carbon and nitrogen metabolism分类
农业科技引用本文复制引用
宁慧峰,崔嘉欣,刘浩,孙景生..灌溉方式和施氮量对水稻产量和品质的影响[J].灌溉排水学报,2017,36(12):1-7,7.基金项目
国家自然科学基金项目(51409249) （51409249）
中央级科研院所基本科研业务费专项(中国农业科学院农田灌溉研究所) （中国农业科学院农田灌溉研究所）
