节水减氮对土壤硝态氮分布和冬小麦水氮利用效率的影响

雒文鹤,师祖姣,王旭敏,李军,王瑞

Effects of water saving and nitrogen reduction on soil nitrate nitrogen distribution, water and nitrogen use efficiencies of winter wheat

Wen-He LUO,Zu-Jiao SHI,Xu-Min WANG,Jun LI,Rui WANG

图3 相同灌水条件下施氮量与小麦产量的关系 W0: 不灌水; W1: 越冬期灌水600 m3 hm-2; W2: 越冬期和拔节期共灌水1200 m3 hm-2。

Fig. 3 Relationship between nitrogen application rate and wheat yield under the same irrigation conditions W0: no irrigation; W1: irrigated 600 m3 hm-2 in overwintering period; W2: irrigated 1200 m3 hm-2 in overwintering period and jointing stage.