CAJ | 학술논문

以夏玉米品种‘户单4号'为材料,通过防雨棚内微区试验研究了两种灌水量(450 m~3/hm~2和900 m~3/hm~2)条件下水肥异区交替灌溉和均匀灌溉对夏玉米生长以及某些生理指标的影响.结果显示:(1)在节水50%的条件下,水肥异区交替灌溉与高灌水量均匀灌溉的夏玉米生物量、产量均无显著差异.(2)低灌水量时,水肥异区交替灌溉下的玉米根系伤流液、叶片可溶性蛋白含量、硝酸还原酶活性、光合速率、蒸腾速率等均高于均匀灌溉施肥处理,而植株全氮含量及叶片水分利用效率与均匀灌溉施肥的差异不显著.(3)高灌水量时,水肥异区交替灌溉处理除根系活力、光合速率以及蒸腾速率高于均匀灌溉处理外,其他指标均低于后者.研究表明,在低灌水量条件下,水肥异区交替灌溉能使夏玉米保持较高的根系活力和正常生理代谢,提高其叶片水分利用效率,从而达到了节水增产的目的.
이하옥미품충‘호단4호'위재료,통과방우붕내미구시험연구료량충관수량(450 m~3/hm~2화900 m~3/hm~2)조건하수비이구교체관개화균균관개대하옥미생장이급모사생리지표적영향.결과현시:(1)재절수50%적조건하,수비이구교체관개여고관수량균균관개적하옥미생물량、산량균무현저차이.(2)저관수량시,수비이구교체관개하적옥미근계상류액、협편가용성단백함량、초산환원매활성、광합속솔、증등속솔등균고우균균관개시비처리,이식주전담함량급협편수분이용효솔여균균관개시비적차이불현저.(3)고관수량시,수비이구교체관개처리제근계활력、광합속솔이급증등속솔고우균균관개처리외,기타지표균저우후자.연구표명,재저관수량조건하,수비이구교체관개능사하옥미보지교고적근계활력화정상생리대사,제고기협편수분이용효솔,종이체도료절수증산적목적.
To investigate the mechanism of water-saving and production-increasing of alternate every furrow irrigation with water and fertilizer in different furrows (AFI),we carried out micro-field experiments of two irrigation and fertilization methods (traditional irrigation method and alternate every furrow irrigation with water and fertilizer in different furrows) combination with two irrigation amounts (450 m~3/hm~2 and 900 m~3/hm~2).In this paper,the effects of two irrigation and fertilization methods on corn growth and some physiological index were studied.Results showed that corn growth was not affected and grain yield was only decreased by about 5% as saving 50% water amount for AFI method.Under the condition of AFI with low irrigation amount,the weight of root flux,leaf soluble protein content,leaf nitrate reductase activity,photosynthesis rate and transpiration rate were higher than those of traditional irrigation.As for high irrigation amount,only the weight of root flux,photosynthesis rate and transpiration rate of AFI were higher than those of traditional irrigation.This indicates that AFI could maintain root activity and normal physiological metabolism at relatively low irrigation amount,and enhance the water use efficiency of corn leaf.Thereby,water-saving and production-increasing were both achieved under low irrigation amount with AFI.