摘要
本文通过大田试验,以地下滴灌为对照,比较膜调控润灌在不同膜规格(40 cm×30 cm、40 cm×20 cm)、灌水总量(1350、1800 m^(3)/hm^(2))和滴头间距(80、100 cm)处理下冬小麦生长指标、产量和水分利用效率的差异。结果表明:与地下滴灌相比,膜调控润灌条件下的冬小麦株高、叶面积指数和干物质积累量均有了不同程度的提高,且孕穗期之后存在显著差异;穗数和穗粒数分别增加了7.20%~20.13%和2.16%~12.50%,产量提高1.36%~12.60%,水分利用效率提高7.83%~17.39%,且均差异显著。在膜调控润灌条件下,减小滴头间距,冬小麦的株高、叶面积指数、干物质积累量、产量和水分利用效率均提高,差异显著;减少上膜尺寸,冬小麦的株高、叶面积指数、干物质积累量增大,随着植株生长差异逐渐显著,同时产量和水分利用效率均增大,对水分利用效率影响显著(滴头间距为80 cm时);增大灌水总量,冬小麦的株高、叶面积指数、干物质积累量和产量均增大,而水分利用效率降低,且差异显著(滴头间距为80 cm时)。膜调控润灌条件下冬小麦生长指标更加良好,同时可有效提高冬小麦产量和水分利用效率,其中T5处理下的产量最高,T2的水分利用效率最大。
This study compared the growth indice,yield and water use efficiency of winter wheat under membrane-regulated irrigation with different membrane size(40 cm×30 cm or 40 cm×20 cm),irrigation amount(1350 or 1800 m^(3)/hm^(2))and emitter spacing(80 or 100 cm).The results from the field experiment showed that the plant height,leaf area index(LAI)and dry matter accumulation of winter wheat covered with membrane increased compared with that under subsurface dripping and the differences were significant after boot stage.The number of panicles and grain number per panicle increased by 7.2%-20.13% and 2.16%-12.5%.the yield increased by 1.36%-12.6%,and the water use efficiency increased by 7.83%-17.3%.when the emitter space shortened,significant increases were found in plant height,LAI,dry matter accumulation,yield and water use efficiency(When the emitter spacing was 80 cm).When the membrane size decreased,the plant height,LAI and dry matter accumulation increased,in which the differences become more significant with the growth of winter wheat.Meanwhile,the yield and water use efficiency also increased.When irrigation amount increased,the plant height,LAI,dry matter accumulation and yield of winter wheat increased,but the water use efficiency decreased(When the emitter spacing was 80 cm).In a summary,winter wheat grew better under membraneregulated irrigation that increased the yield and water use efficiency.Amount the treatments,the yield under T5 was the highest,and the water use efficiency under T2 was the best.
作者
韩明明
张西平
程伍群
绳莉丽
段启蒙
HAN Mingming;ZHANG Xiping;CHENG Wuqun;SHENG Lili;DUAN Qimeng(College of Urban and Rural Construction,Hebei Agricultural University,Baoding 071001,China)
出处
《河北农业大学学报》
CAS
CSCD
北大核心
2022年第6期16-23,共8页
Journal of Hebei Agricultural University
基金
河北雄安新区农业节水试验示范项目(2020-11)
河北省水利科研计划项目(2018-30)
河北省水利厅专项(HBAT02242202010-CG)。
关键词
膜调控润灌
生长指标
冬小麦
产量
水分利用效率
membrane-regulated irrigation
growth indicators
winter wheat
yield
water use efficiency
