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通过田间小区试验,研究了3 g/L微咸水灌溉对土壤盐分动态和春玉米生长发育的影响。结果表明,用矿化度为3 g/L的微咸水灌溉可在土体中积累较多的盐分,对春玉米叶面积、株高、叶绿素含量、干物质、产量均有不良影响,玉米叶面积在玉米生长后期减少速度较快,干物质积累相对减少,玉米产量下降。在干旱年份微咸水灌溉致使玉米产量下降了28.0%,多雨年份玉米产量下降了10.4%,井渠混灌在干旱和多雨年份玉米产量则分别下降了14.0%和7.4%。
Field experiment was conducted to study the effects of 3 g / L brackish water irrigation on soil salt dynamics and spring maize growth and development. The results showed that salt water with salinization of 3 g / L could accumulate more salt in the soil, which had adverse effects on leaf area, plant height, chlorophyll content, dry matter and yield of spring maize. Leaf area decreased rapidly in late maize stage, relative dry matter accumulation decreased, and maize yield decreased. Brackish water irrigation in dry years led to a 28.0% reduction in maize production, a 10.4% decrease in maize production during wet years and a 14% and 7.4% drop in well and channel irrigation during dry and wet years.