水肥“三匀”技术对水稻水、氮利用效率的影响

杨志远,李娜,马鹏,严田蓉,何艳,蒋明金,吕腾飞,李郁,郭翔,胡蓉,郭长春,孙永健,马均

Effects of methodical nitrogen-water distribution management on water and nitrogen use efficiency of rice

Zhi-Yuan YANG,Na LI,Peng MA,Tian-Rong YAN,Yan HE,Ming-Jin JIANG,Teng-Fei LYU,Yu LI,Xiang GUO,Rong HU,Chang-Chun GUO,Yong-Jian SUN,Jun MA

表2 2015年和2017年耕层土壤养分含量表

Table 2 Average values for selected soil characteristics of composite topsoil samples (0-20 cm) from the experimental fields in 2015 and 2017

试验 Experiment 有机质 Organic matter (g kg-1) 全氮 Total N (g kg-1) 速效氮 Available N (mg kg-1) 速效磷 Available P (mg kg-1) 速效钾 Available K (mg kg-1) 试验1 Exp.1 16.57 1.47 76.46 14.42 79.13 试验2 Exp.2 26.41 2.03 109.65 29.57 110.48 试验3 Exp.3 22.08 1.79 100.33 21.83 98.36