| 焦艳平,康跃虎,万书勤,刘伟,董锋.干旱区盐碱地覆膜滴灌条件下土壤基质势对糯玉米生长和灌溉水利用效率的影响[J].干旱地区农业研究,2007,(6):144~151 |
| 干旱区盐碱地覆膜滴灌条件下土壤基质势对糯玉米生长和灌溉水利用效率的影响 |
| Effect of soil matric potential on waxy corn growth and irrigation water use efficiency under mulch drip irrigation in saline soils of arid areas |
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| DOI：10.7606/j.issn.1000-7601.2007.06.29 |
| 中文关键词: 盐碱地 膜下滴灌 土壤基质势 糯玉米 |
| 英文关键词:saline soils mulch drip irrigation soil matric potential waxy corn |
| 基金项目:中国科学院知识创新工程项目(KSCX2-YW-N-003)； 宁夏回族自治区农业综合开发领导小组办公室委托项目； 天津市科技发展计划项目(05YFGZNC01000与06YFGZNC00100) |
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| 中文摘要: |
| 利用埋在滴头正下方0.2 m深度的真空表负压计,通过控制土壤基质势下限(-5,-10,-15,-20,-25 kPa),研究盐碱地覆膜滴灌条件下土壤基质势对糯玉米(中糯1号)的生长、产量形成过程和灌溉水利用效率的影响。2005和2006年的试验结果表明:糯玉米的株高、茎粗、叶面积指数、地上部分干物质积累量、叶绿素含量等都随着土壤基质势的升高而增加,土壤基质势越高,糯玉米鲜食果穗产量越高,果穗性状也越好;土壤基质势在-5 kPa时,糯玉米产量最高;土壤基质势在-10-15 kPa时,灌溉水利用效率最高。 |
| 英文摘要: |
| By presetting threshold of soil matric potential(-5 kPa,S1;-10 kPa,S2;-15 kPa,S3;-20 kPa,S4;-25 kPa,S5) to control the timing of the irrigation cycle with vacuum tensiometers buried at 0.2 m depth immediately under drip emitter,field experiments were carried out to investigate the effect of soil matric potential on waxy corn growth,yield and irrigation water use efficiency under mulch drip irrigation in saline soils of arid areas in 2005 and 2006.The results showed that the plant height,stem circumference,LAI,above-ground dry biomass,Chlorophyll content of waxy corn all increased with the increasing of soil matric potential,the higher the soil matric potential was,the higher the ear yields and the better the ear characteristics were;the highest ear yields were achieved with the soil matric potential of-5 kPa and the irrigation water use efficiency with the soil matric potential from-10 kPa to-15 kPa were higher than that of the other treatments. |
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