摘要： 研究了2种灌水量(W)和3种施氮(N)量对日光温室番茄产量和土壤中水、N利用率的影响,结果表明:施N量对番茄产量的影响大于灌水量,两因素间存在交互作用。施N量和灌水量均可显著影响土壤水分利用率(WUEY)。灌水量较多时(4 541.0 m3 /hm2 ),WUEY随着施N量的增加而增加,但差异不显著;而灌水量较少(2 270.5m3 /hm2)时,追施少量N肥(373.77 kg/hm2)即可显著提高WUEY;在施N量相同的前提下,加大灌水量可显著降低WUEY。在灌水量相同的情况下,随着施N量的增加,N素损失率显著增加;在施N量相同的情况下,不同的灌水量对N素损失率影响不显著。
关键词:
水分利用率,
N肥利用率,
日光温室,
番茄
Abstract: Influences of 2 water levels and 3 nitrogen levels reciprocally application on water use efficiency (WUEY) and nitrogen use efficiency(NUE) were studied in tomato(cv． Skala) solar greenhouse under similar yield as compared with the conventional method．The results showed that: The increasing effect of three factors on tomato yield was in an order of N ＞ H2 O．There were interactions between the two factors．WUEY was significantly affected by both irrigation and nitrogen amount．Under W1(4 541． 0 m3 /ha)，as the levels of nitrogen amount increased，the WUEY also increased， but no significant difference among the WUEYS．Under W2(2 270． 5 m3 /ha)，N2(373． 77kg /ha) was not significant different from N1．Under the same amount of nitrogen，as the amount of irrigation in- creased，the WUEY decreased． N loss percentage was not distinctly affected by water，but strongly affected by the a- mount of nitrogen．Rational water and nitrogen can reduce N loss percentage effectively．
Key words:
Water use efficiency,
Nitrogen use efficiency,
Solar greenhouse,
Tomato
中图分类号:
米国全, 程志芳, 赵肖斌, 韩永平, 王晋华, 任华中. 水氮耦合对日光温室番茄产量和土壤水、氮利用率的影响[J]. 华北农学报, 2013, 28(4): 174-178. doi: 10.3969/j.issn.1000-7091.2013.04.032.
MI Guo-quan, CHENG Zhi-fang, ZHAO Xiao-bin, HAN Yong-ping, WANG Jin-hua, REN Hua-zhong. Influences of Different Water and Nitrogen Application on Yield， WUEY and NUE in Solar Greenhouse[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2013, 28(4): 174-178. doi: 10.3969/j.issn.1000-7091.2013.04.032.