草甸草原区退耕地的牧草-水分-氮肥耦合机制
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李达,方华军,王笛,徐丽君,唐雪娟,辛晓平,聂莹莹,乌仁其其格
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Coupling Mechanism of Herbage-Water-Nitrogen Fertilizer in Abandoned Farmland in Meadow Steppe
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LI Da,FANG HuaJun,WANG Di,XU LiJun,TANG XueJuan,XIN XiaoPing,NIE YingYing,Wuren qiqige
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表1 试验设计
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Table 1 Experimental design
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处理组
Treatment | 牧草类型
Pasture | 补水
Irrigation
(mm·m-2) | 氮水平
Nitrogen level
(kg N·hm-2·a-1) | | P1I0N0 | 苜蓿单播
Alfalfa
（P1） | 0 | 0 | | P1I0N1 | 75 | | P1I0N2 | 150 | | P1I1N0 | 20 | 0 | | P1I1N1 | 75 | | P1I1N2 | 150 | | P2I0N0 | 无芒雀麦单播
Awnless brome
（P2） | 0 | 0 | | P2I0N1 | 75 | | P2I0N2 | 150 | | P2I1N0 | 20 | 0 | | P2I1N1 | 75 | | P2I1N2 | 150 | | P3I0N0 | 苜蓿+无芒雀麦混播
Alfalfa+ Awnless
brome（P3） | 0 | 0 | | P3I0N1 | 75 | | P3I0N2 | 150 | | P3I1N0 | 20 | 0 | | P3I1N1 | 75 | | P3I1N2 | 150 |
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