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在长城沿线风沙区,设置带型150cm(DX1)、带型120cm(DX2)、带型80cm(DX3)、双沟覆膜(DX4)、平膜穴播(DX5)、露地平作(CK)6种微集水种植模式,研究各模式对黑豆产量及水分利用效率的影响。结果表明,与露地平作相比,微集水种植模式条件下土壤表层含水量高,黑豆生育期提前,叶面积、生物量和叶绿素含量均显著增加;不同微集水模式中,双沟覆膜集水效果最为明显,黑豆籽粒产量及水分利用效率分别较露地平作提高19.6%和31.4%,其他栽培模式差异均达到显著水平。表明,微集水技术具有较好的聚雨保墒效果,能明显提高黑豆籽粒产量及水分利用效率。
In the sand-blown area along the Great Wall, there are 6 types of straws (DX1), 120 cm (DX2), 80 cm (DX3), DX4, DX5 and CK Micro-catchment planting patterns to study the effects of different patterns on black bean yield and water use efficiency. The results showed that, compared with the open-field cropping, the moisture content of soil surface was increased, the growth period of black bean was earlier, the leaf area, biomass and chlorophyll content were significantly increased under the micro-catchment pattern. In different micro-catchment modes, The water harvesting effect was the most obvious. The grain yield and water use efficiency of black beans increased by 19.6% and 31.4% respectively compared with that of open field, and the differences of other cultivation modes reached significant levels. It shows that micro-catchment technology has better effect of collecting moisture and preserving soil moisture, and can obviously improve grain yield and water use efficiency of black beans.