摘要
在大田条件下,研究不同灌溉量对干旱半干旱地区春小麦生长及产量构成的影响,以期为春小麦节水灌溉提供理论依据。结果表明,灌溉量为4286 m^3/hm^2（常规对照灌溉量4495 m3/hm2,减少209 m^3/hm^2）未对春小麦生长及产量造成不利影响;灌溉量为3670 m^3/hm^2（比常规灌溉量减少825 m^3/hm^2）对春小麦生长产生了部分不利影响,但没有使产量明显降低;灌溉量为3060 m^3/hm^2（比常规对照减少1435 m^3/hm^2）使春小麦株高降低、干鲜重减少、产量明显减少,对春小麦生长及产量产生明显不利影响。综合考虑,正常年份宁夏引黄灌区春小麦适宜灌溉量在3900-4200 m^3/hm^2,尚有200-500 m^3/hm^2的节水潜力。
To supply scientific evidences of saving water, a study was made on effects of different irrigation quota on the growth and yield of spring wheat in field conditions in arid and semiarid regions. The results showed that the growth and yield of spring wheat was unchanged under irrigation quota of 4 286 m^3/hm^2（209 m^3/hm^2 less than comparison treatmere）. Though irrigation quota of 3 670 m^3/hm^2（825 m^3/hm^2 less than comparison treatment） influenced the growth of spring wheat, but the yield did not reduce obviously. Irrigation quota of 3 060 m^3/hm2（1 435 m^3/hm^2 less than compari- son treatment） affected the growth of spring wheat badly： plant height reduced, dry weight and fresh weight decreased, yield reduced obviously. In common years, fitting irrigation quota was 3 900- 4 200 m^3/hm^2 and water - saving potential was 200- 500 m^3/hm^2 in irrigation region in Ningxia.
出处
《干旱地区农业研究》
CSCD
北大核心
2009年第4期46-49,共4页
Agricultural Research in the Arid Areas
基金
中国气象局新技术推广项目(CMATG2007S06)
关键词
灌溉量
春小麦
产量
irrigation quota
spring wheat
yield
