耕作、施氮和密度及其互作对旱地春玉米土壤水分及产量形成的影响
李敖,张元红,温鹏飞,王瑞,董朝阳,宁芳,李军(
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Effects of Tillage, Nitrogen Application, Planting Density and Their Interaction on Soil Moisture and Yield Formation of Spring Maize in Dryland
LI Ao,ZHANG YuanHong,WEN PengFei,WANG Rui,DONG ZhaoYang,NING Fang,LI Jun()
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图4. 2017—2018不同处理春玉米干物质积累量
PB为抽雄期干物质积累量,TB为成熟期干物质积累量。不同大写字母代表耕作间统计检验在5%水平差异显著;不同小写字母代表施肥间统计检验在5%水平差异显著;*代表不同密度下统计检验在5%水平差异显著;NS代表差异不显著
Fig. 4. Effect of different treatments on the dry matter accumulation of spring maize in 2017-2018
PB stands for biomass at tasseling stage, and TB stands for total biomass. Different uppercase letters represent significant differences at 5% level between tillage treatments; Different lowercase letters represent significant differences at 5% level between fertilization treatments; * represent statistically significant differences at 5% level at different densities; NS stands for no significance
