CAJ | 학술논문

通过微咸水淋洗改良苏打盐渍土旱田的试验,探讨了微咸水淋洗对玉米生长发育和产量的影响.结果表明,与对照处理相比,补充灌溉和淋洗处理均促进了玉米植株生长和根系发育,且淋洗处理的效应更为明显;300、150 mm淋洗和补充灌溉处理分别较对照区增产68.69%,62.25%和8.41%,淋洗处理较补充灌溉处理达到了极显著增产,300 mm较150 m m淋洗处理虽有显著增产效果,但未达极显著水平.表明就本试验区玉米的正常生长发育而言,150 mm淋洗定额已基本满足,可作为改良应用的参考定额.
통과미함수림세개량소타염지토한전적시험,탐토료미함수림세대옥미생장발육화산량적영향.결과표명,여대조처리상비,보충관개화림세처리균촉진료옥미식주생장화근계발육,차림세처리적효응경위명현;300、150 mm림세화보충관개처리분별교대조구증산68.69%,62.25%화8.41%,림세처리교보충관개처리체도료겁현저증산,300 mm교150 m m림세처리수유현저증산효과,단미체겁현저수평.표명취본시험구옥미적정상생장발육이언,150 mm림세정액이기본만족,가작위개량응용적삼고정액.
An experiment of leaching slightly saline-sodic soil with mildly saline wa ter wa s conducted for analysis of change in corn growth character, such as plant heigh t, leaf area index and root, etc. There were four treatments: CK; supplementary irrigation; low-rate leaching; and high-rate leaching.Results indi cate that the average plant height in Treatment 3 increased by 13% compared to t hat in CK. Leaf area index in both Treatment 4 and 3 increased significantly com pared to that in CK. Corn yield in Treatment 4, 3 and 2 increased respectively b y 68.69%, 62.25% and 8.41% compared to that in CK. It is obvious that corn growt h character and yield in leaching treatments was improved significantly, and wat er condition was an important effect. It is hence concluded that suitable prefer ential volume of leaching in slightly saline-sodic soil in western Jilin P rovince is 150 mm, providing sufficient condition for local corn growing healthi ly.