Schedule Optimization of Under-Plastic-Mulch Drip Irrigation for Cotton in Arid Areas

YI Peng-fei; Hudan·Tumaerbai; WANG Yi-min; WU Zheng-guang; ZHANG Jing-zhu

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Schedule Optimization of Under-Plastic-Mulch Drip Irrigation for Cotton in Arid Areas

- Schedule Optimization of Under-Plastic-Mulch Drip Irrigation for Cotton in Arid Areas
- Bulletin of Soiland Water Conservation Vol. 30, Issue 1, Pages: 53-57(2011)
- 作者机构：
  
  新疆农业大学水利与土木工程学院,新疆,乌鲁木齐,830052
- 作者简介：
- 基金信息：
- DOI：
  CLC： P343.9
- Published：2011
- 稿件说明：
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YI Peng-fei, Hudan·Tumaerbai, WANG Yi-min, et al. Schedule Optimization of Under-Plastic-Mulch Drip Irrigation for Cotton in Arid Areas[J]. Bulletin of Soiland Water Conservation, 2011, 30(1): 53-57.
DOI：

YI Peng-fei, Hudan·Tumaerbai, WANG Yi-min, et al. Schedule Optimization of Under-Plastic-Mulch Drip Irrigation for Cotton in Arid Areas[J]. Bulletin of Soiland Water Conservation, 2011, 30(1): 53-57. DOI：

摘要

在新疆干旱气候条件下

2009年通过对棉花膜下滴灌进行试验研究

分析了不同灌溉定额和灌水周期对土壤水盐分布及棉花生长的影响.结果表明

灌水周期5d的处理能够达到棉花最适宜的土壤水分范围.在相同的灌水周期下

土壤剖面平均含水量随着灌溉定额的增加而增大.较高灌水频率对根区土壤盐分具有较好的淋洗作用

灌水周期10d的处理

土壤盐分波动变化较大

在生育期内土壤盐分出现累积现象.从节水增产和抑盐方面考虑

灌溉定额3900m

/hm

灌水周期为5～7d的灌溉制度适合北疆农业生产.

Abstract

Under-plastic-mulch drip irrigation was studied through field experiments in arid areas of Xinjiang in 2009.The influences of various irriga-tion quotas and frequencies on water-salt distribution and cotton growth were analyzed.The results show that irrigations with a cycle of 5days achieved the most appropriate moisture condition for cotton growth.With same irrigation quota

soil moisture increased by shortening irrigation cycle time.The higher irrigation frequency effectively reduced the salinity of root area.The treatment of 10 day cycle introduced fluctuations of salinity in soil and resulted in salt accumulation at the growth period.Considering water conservation

yield enhancement and soil salt reduction

the irrigation quota of 3900m3/hm2 with a irrigation cycle of five to seven days are desirable for agricultural industry in the study area.

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