免耕条件下川香优9838氮磷钾吸收规律与氮肥合理施用

孙锡发; 涂仕华; 秦鱼生; 冯文强; 廖鸣兰; 周先龙; 《农业科学与技术(英文版) 》 2008

摘要：The aim of the study is to investigate the absorption laws of nitrogen,phosphorus,and potassium,and proper nitrogen application in Chuanxiangyou 9838 under no-tillage cultivation. Five nitrogen application treatments were designed to analyze the absorption laws of N,P and K,and to discuss the effects of different N fertilizer application amounts on yield and yield composition factors of Chuanxiangyou 9838. The results showed that gross nutrient absorption in Chuanxiangyou 9838 was greatly varied at differen...

关键词： 高产优质 施氮量 成熟期 氮肥用量 免耕 拔节期 氮肥施用量 不同生育期 吸收规律 抽穗期