摘要
间歇灌溉技术是以不同的土壤、施肥水平、气象条件为依据而采取的灌溉措施。间歇灌溉在分蘖期抑制矿质营养吸收,长穗期有促进作用。间歇灌溉对分蘖期和长穗期碳水化合物积累有显著促进作用。间歇灌溉能提高土壤氧化还原电位;增强根系活力;抑制无效分蘖,提高有效穗数;增强抗倒能力,改善受光姿势。产量与不同施 N 水平间差异达极显著水平,灌溉处理间差异不显著,但分蘖期、长穗期、结实期节水各达8.7%、22.9%、16.9%。
Intermittent irrigation thechnique is according to different soil type. s,different quantity of fertilizer applicaion and meteorological condition Intermittent irrigation inhibited to uptake mineral nutrient at tillering s- tage,but it was hastened to uptake emineral nutrient at intermediate stage of growing Carbohydate accumulation was increased by the technique at t- illering stage and intermediate stage of growing The tecique was able to raise redox potential of soil,increase roots activity,inhibit unavailable tiller,increase the ability of resistance to lodging and adjustment plants posture The difference between the yield and the quantity of fertilizer ap- plication at significant level—1%。There was not significant diffrernce among the yields of dfferent irrigation treatment Saving Watter was sep- arately by 8.7%,22.9%,and 16.9% at tillering stage,intermediate stage of growing anh productive phase by this technique
