留茎高度对红芪产量和土壤水分的影响

摘要

[目的]研究留茎高度对红芪产量和土壤水分的影响.[方法]采用单因素随机区组法,在甘南高原地区研究了红芪留茎高度对其产量和土壤水分的影响.[结果]在7月上旬现蕾前进行剪茎,且留茎50 cm的红芪的水分利用效率最高,主根长、根径、单株根鲜重等经济性状和产量最高,且产量比CK明显提高了30.86％.[结论]红芪留茎高度在50 cm左右时较为理想,既可以节水又能达到增产的效果.%[Objective] To study the effect of stubbie height on the yield and soil moisture of Hedysarum polybotrys Hand. -Mazz. [ Method] The single factor randomized block was designed to study the effects of stubble height on the yield and soil moisture of Hedysarum polybotrys Hand. -Mazz in Gannan Plateau area. [ Result ] The stem was cut before budding in early July, and the water use efficiency, main root length, root diameter, root fresh weight and yield were the highest when the stubble height was 50 cm, the yield improved significantly by 30. 86% compared to CK. [Conclusion] The stubble height of 50 cm -was the best, which can not only save the water but also improve the yield.