
栽培措施对超级稻产量及氮肥利用效率的影响
网络出版日期: 2019-07-20
基金资助
国家重点研发计划(2017YFD0200107;2017YFD0301206);国家自然科学基金(31872853;31671614);江苏省自然科学基金(BK20181455);江苏高校优势学科建设工程;扬州大学高端人才支持计划资助项目
Effects of Cultivation Measures on Yield and Nitrogen Use Efficiency of Super Rice
毛依琦1,2,陈蕾1,2,顾逸彪1,2, 张耗1,2,刘立军1,2,王志琴1,2,杨建昌1,2,顾骏飞1,2 * . 栽培措施对超级稻产量及氮肥利用效率的影响[J]. 中国稻米, 2019 , 25(4) : 8 -15 . DOI: 10.3969/j.issn.1006-8082.2019.04.003
Rice is an important food crops in China. Under the background of growing population and economics, the demand for grain is continuously increasing, while the increase of grain yield requires greater input of fertilizer and water and better cultivation measures. Under the condition of large amount of fertilizer and water input in China, it is of great significance to optimize cultivation measures for increasing yield and fertilizer use efficiency of rice. An experiment was conducted to study the effects of cultivation measures (zero N application, local farmer’s practice, increase in plant density and decrease in N rate, precise irrigation) on yield and nitrogen fertilizer utilization efficiency of rice, using hybrid rice Yongyou 2640 and conventional japonica rice Wuyungeng 24 as materials. The results showed that the cultivation measures such as increase in plant density and decrease in N rate, precise irrigation could significantly improve effective leaf area index (LAI), efficient LAI, seed/leaf ratio, sink capacity and activities of enzymes of nitrogen metabolism, and then improve grain yield and nitrogen use efficiency.
Key words: rice; cultivation measure; yield; nitrogen use efficiency
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