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中文摘要：
通过2年带防雨棚微区试验研究了传统灌水施肥与水肥异区交替灌水施肥对土壤中水分和硝态氮分布的影响。结果表明：土壤水分和硝态氮分布与灌水方式和灌水量有关。无论灌水量高低，第1次灌水后，水肥异区的施肥沟与灌水沟在O～60cm土层土壤水分和硝态氮含量存在差异。第2次灌水后，施肥沟与灌水沟之间土壤水分含量的差异会随灌水量增加而缩小，而二沟之间0～60cm土层中硝态氮含量的差异则随灌水量的增加而增加。同时，土壤中表层及亚表层硝态氮含量随灌水量的增加而增加。考虑到减少水分的深层渗漏和提高肥料的有效性，在交替灌水时必须控制灌水量，建议灌水量在450-600m3／hm2为佳。
英文摘要：
A two-year micro-field trials was carried out to determine the influences of traditional furrow ir- rigation and alternate furrow irrigation with fertilization and irrigation in different rows on the distribution of soil moisture and nitrate. Results showed that the distribution of soil moisture and nitrate were affected by irrigation patterns, water amount and frequency of irrigation. Regardless the amount of irrigation, there was differences between fertilization furrow and irrigation furrow in soil moisture content and soil ni- trate content on the profile of 0~60 cm after the first irrigation. The differences in soil moisture decreased and in soil nitrate increased with the amount of irrigation increase after the second irrigation. While the ni- trate content of surface and subsurface layer increased with the amount of irrigation increase. Given decrea- sing the water and nitrate deep percolation and increasing the availability of fertilizer, the amount of irriga- tion should be in the range of 450-600 m3/hm2.
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