干旱区生态环境知识资源中心(Arid): 绿洲膜下滴灌调亏马铃薯水分生产函数及灌溉制度优化

Arid

	绿洲膜下滴灌调亏马铃薯水分生产函数及灌溉制度优化
其他题名	Water production function and optimization in irrigation schedule of potato with mulched drip irrigation under water deficit in oasis region
	杜嘉 1; 张恒嘉 1; 张明 2; 巴玉春 2; 杨晓婷 1; 何鹏杰 1; 李炫臻 1
来源期刊	干旱地区农业研究
ISSN	1000-7601
出版年	2017
卷号	35 期号:1 页码:158-164,177
中文摘要	通过田间试验研究了绿洲膜下滴灌调亏马铃薯各生育期耗水规律及其影响因素,建立了以Jensen模型为基础的水分生产函数并对马铃薯灌溉制度进行了优化。结果表明: 块茎膨大期马铃薯水分敏感指数最大,块茎形成期次之,苗期和淀粉积累期较小; 块茎形成期轻度调亏对马铃薯产量无显著影响(P > 0.05),而块茎形成期中度调亏、块茎膨大期轻度和中度调亏对其产量均有显著影响(P < 0.05); 块茎形成期轻度调亏的水分利用效率比块茎形成期中度调亏、块茎膨大期轻度调亏和全生育期充分灌水分别提高了6.2%、8.3%和6.7%; 膜下滴灌调亏马铃薯产量随耗水量增加而增加,水分利用效率随之降低,全生育期充分灌水比块茎膨大期中度水分调亏耗水量增加22.4%,产量增加20.4%,水分利用效率降低14.0%。采用遗传算法并结合水分生产函数进行灌溉制度优化,结果表明: 河西绿洲区膜下滴灌马铃薯全生育期灌溉定额为225 mm时,产量最高,为43.86 t·hm~(-2),灌溉水利用效率为19.5 kg·m~(-2); 灌溉制度为苗期灌水20 ~ 30 mm,块茎形成期灌水70 ~ 75 mm,块茎膨大期灌水100 ~ 115 mm,淀粉积累期灌水20 ~ 25 mm,灌水间隔为7 d。因此,膜下滴灌调亏在降低马铃薯耗水量的同时,提高了水分利用效率,在块茎形成期轻度水分调亏不影响产量,可达到节水增产的目的。
英文摘要	A field experiment was conducted to test the potato periodic evapotranspiration and its influencing factors with mulched drip irrigation under water deficit regulation (WDR) in oasis irrigation region. Crop water production function based on Jensen model was established,and the optimal irrigation schedule for potato was determined. The results showed that the sensitive index was found the largest at the tuber bulking stage,followed by the tuber initiation stage and relatively small at the establishment and potato starch accumulation stages. Potato yield was not decreased by low WDR plots during tuber initiation (P >0.05),but was significantly decreased in the medium WDR plots during tuber initiation and low and medium WDR plots during tuber bulking (P <0.05). The water use efficiency (WUE) was maintained in low WDR potato during tuber initiation,significantly improved by 6.2%,8.3% and 6.7% from that in medium WDR plots during tuber initiation,low WDR plots during tuber bulking and full irrigation plots (CK),respectively. With the increase of crop evapotranspiration,the potato bulb yield became increased,while the water use efficiency was decreased. Crop evapotranspiration was increased by 22.4%,the potato bulb yield was increased by 20.4% and the WUE went decreased by 15.7%. The optimal irrigation system established by genetic algorithm with crop water production function showed that the highest potato bulb yield (43.86 t·hm~(-2)) could be achieved when the irrigation depth was up to 225 mm in the Hexi oasis,and irrigation WUE was 19.5 kg·m~(-2). The recommended amount of irrigation is 30 ~40, 130 ~140,170 ~190 mm and 25 mm at the stages of establishment,tuber initiation,tuber bulking and potato starch accumulation, respectively,and the irrigation intervals are 7 days. Therefore,when WDR under mulched drip irrigation reduces potato water consumption,the water use efficiency can be enhanced. Low WDR does not affect the potato yield during tuber initiation,reaching water-saving purposes.
中文关键词	绿洲马铃薯 ; 膜下滴灌 ; 水分调亏 ; 灌溉制度优化 ; 产量 ; 水分利用效率
英文关键词	oasis potato mulched drip irrigation water deficit optimal irrigation schedule yield water use efficiency
语种	中文
国家	中国
收录类别	CSCD
WOS类目	AGRICULTURAL ENGINEERING
WOS研究方向	Agriculture
CSCD记录号	CSCD:5912315
来源机构	甘肃农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/235877
作者单位	1.甘肃农业大学工学院, 兰州, 甘肃 730070, 中国; 2.民乐县洪水河管理处, 民乐, 甘肃 734500, 中国
推荐引用方式 GB/T 7714	杜嘉,张恒嘉,张明,等. 绿洲膜下滴灌调亏马铃薯水分生产函数及灌溉制度优化[J]. 甘肃农业大学,2017,35(1):158-164,177.
APA	杜嘉.,张恒嘉.,张明.,巴玉春.,杨晓婷.,...&李炫臻.(2017).绿洲膜下滴灌调亏马铃薯水分生产函数及灌溉制度优化.干旱地区农业研究,35(1),158-164,177.
MLA	杜嘉,et al."绿洲膜下滴灌调亏马铃薯水分生产函数及灌溉制度优化".干旱地区农业研究 35.1(2017):158-164,177.