水分调控对滴灌春小麦籽粒灌浆特性的影响  

The Effect of Water Regulation on Grain-Filling Properties of Drip Irrigated Spring Wheat

作　　者：杨茹[1] 廖江[1] 何海兵[1] 马富裕[1] 

机构地区：[1]石河子大学/新疆兵团绿洲生态农业重点实验室,石河子832003

出　　处：《石河子大学学报（自然科学版）》2012年第5期572-576,共5页Journal of Shihezi University(Natural Science)

基　　金：国家自然科学基金项目(31160260);石河子大学重大攻关项目(GXJS2010-ZDGG03-02)

摘　　要：为探明水分调控对滴灌春小麦籽粒灌浆特性的影响,于2011年在石河子大学农学院试验站以新春6号和新春19号为参试品种,设置3000m3/hm2(W1)、4500m3/hm2(W2)、6000m3/hm2(W3)、7500m3/hm2(W4)4个灌量处理研究灌溉量对滴灌春小麦籽粒灌浆特性的影响。结果表明:随灌水量的增加灌浆持续时间呈现延长的趋势,而灌浆速率呈现递减的趋势;两品种均表现为W3处理(全生育期灌水6000m3/hm2)的粒重最高;新春19号各灌浆参数的变异系数均大于新春6号,说明新春19号较新春6号对水分胁迫较为敏感;籽粒千粒重与灌浆渐增期持续天数呈显著正相关。表明在滴灌条件下,灌水量6000m3/hm2能有效促进春小麦籽粒灌浆特性,使得群体结构更加合理,并充分发挥其高产潜力。To study the effect of water regulation on the characteristics of wheat grain-filling under drip irrigation,a field experi- ment with two genotypes of spring wheat,＂Xinehun 6＂and ＂Xinchun 19＂, was conducted at Experimental Station of Shihezi U- niversity in 2011. The results showed that the irrigation amount and grain-filling duration was positively correlated, but the irrb gation amount and grain-filling rate was negatively correlated; Both the kernel weight of ＂Xinehun 6＂and ＂Xinchun 19＂ were the highest when the irrigation amount was 6000 m3/hmz in entire growth period; The fact that variation coefficient of all the grain- filling parameters on ＂Xinchun 19＂ was much more than that on ＂Xinchun 6＂ indicated that ＂Xinchun 19＂ was more susceptible to water stress than ＂Xinchun 6＂. The result of correlation analysis and stepwise regression analysis showed that grain weight of ＂Xinehun 6＂ and ＂Xinehun 19＂ had positive relationship with increasing filling duration. All these indicated that under the drip irrigation, the irrigation amount of 6000 m3/hmz could effectively promote grain-filling, make the population structure more rea- sonable,and give full play to its high yield potential.

关 键 词：滴灌 春小麦 水分调控 灌浆特性 

分 类 号：S512.12[农业科学—作物学]