【摘要】 为探究微润灌溉下施氮水平对植物生长的影响,在大棚内用规格一致的土箱种植辣椒,该试验设置1.5、2 m两个压力水头,3个施氮水平(0、500、1000 mg/L尿素),即有1.5 m压力水头下施氮水平500 mg/L(A处理)、1.5 m压力水头下施氮水平1 000 mg/L(B处理)、1.5 m压力水头下施氮水平0 mg/L(C处理)、2 m压力水头下施氮水平500 mg/L(D处理)、2 m压力水头下施氮水平1 000 mg/L(E处理)、2 m压力水头下施氮水平0 mg/L(F处理)6个不同处理,每个处理重复试验3次,分析辣椒植株的生长状况以及产量。研究表明:2 m压力水头下大棚辣椒植株的生长状况均优于1.5 m压力水头,相同压力水头下500 mg/L施肥处理下的辣椒植株生长发育状况最好。更多还原

【Abstract】 In order to explore the effect of nitrogen application level on plant growth under micro-moist irrigation, pepper was planted in a greenhouse in a soil box with the same specifications. Two pressure heads of 1.5 m and 2 m were set up in the experiment. Three nitrogen application levels(0, 500 and 1 000 mg/L urea) were used, namely, 500 mg/L under 1.5 m pressure head(treatment A), 1 000 mg/L under 1.5 m pressure head(treatment B), and 1.5 m pressure head. Six different treatments were applied, namely, 0 mg/L nitrogen application level(C treatment), 500 mg/L nitrogen application level(D treatment) under 2 m pressure head, 1 000 mg/L nitrogen application level under 2 m pressure head(E treatment), and 0 mg/L nitrogen application level under 2 m pressure head(F treatment). The growth status and yield of pepper plants were analyzed by repeated experiments three times for each treatment. The results showed that the growth status of greenhouse pepper plants under 2 m pressure head was better than that under 1.5 m pressure head, and the growth status of pepper plants under 500 mg/L fertilization under the same pressure head was the best.更多还原