摘要
以膜下滴灌作对照,共设5个处理,研究了微润灌溉条件下不同埋设深度、间距和压力对玉米生长及产量的影响.结果表明,微润灌溉的玉米单株干物质积累趋势异于膜下滴灌;玉米茎粗、株高和产量随耗水量的增加而增加;膜下滴灌(CK)的产量最高,与微润灌溉处理有极显著差异,分别比T1、T2、T3和T4高33.13%、34.48%、26.82%和63.94%;微润灌溉的水分利用效率较膜下滴灌高,各处理无极显著差异,最高的为T2处理,且与膜下滴灌有显著差异;微润灌溉有利于玉米籽粒发育,使籽粒饱满,百粒质量增加;在不同的微润灌溉处理下,微润管的埋设深度、间距和压力对玉米的产量和水分利用效率都有显著的影响,其中压力对玉米产量和水分利用效率影响最大,间距对耗水量的影响较大.
An experiment was conducted to study the effect of different ways of micro-moist irrigation on growth and yield of maize under different buried depths, spacing and pressures of micro-moist irrigation. The results showed that the dry matter accumulation of micro-moist irrigation was different from that of drip irrigation ; the stem diameter, height and yield increased with the water consumption ; membrane drip irrigation had the highest yield which increased by 33.13% ,34.48% ,26. 82% and 63.94%, compared with T1, T2, T3 and T4. Water use efficiency （WUE） of micro-moist irrigation was higher than that of drip irrigation, all treatments had no significant difference, WUE of T2 was the highest, and it had a sig- nificant difference with drip irrigation. Micro-moist irrigation was beneficial to the development of maize- seed and to the increase of grain mass. The effect of different micro-moist irrigation on the maize yield and WUE was significant under different buried depths, spacing and pressures. The pressure mainly in- fluenced maize yield and WUE, and the spacing mainly influenced water consumption.
出处
《华南农业大学学报》
CAS
CSCD
北大核心
2012年第4期566-569,共4页
Journal of South China Agricultural University
基金
甘肃省科技支撑计划(090NKCA069)
关键词
微润灌溉
压力
埋设深度
间距
玉米
产量
灌水量
micro-moist irrigation
pressure
buried depth
spacing
maize
production
irrigation water
