陕西林业科技2023，Vol.51Issue(4)：28-34,7.DOI:10.3969/j.issn.1001-2117.2023.04.007
种植密度对饲用膜荚黄芪农艺性状和产量的影响
Effects of Planting Density on Agronomic Traits and Yield of Astragalus membranaceus
摘要
Abstract
The study was to determine the planting density suitable for Astragalus membranaceus for-age with high quality and high yield in the hilly gully Loess Plateau of northern Shaanxi.The different planting densities(71 429～500 000plants·hm-2)regarding their agronomic characters and yields of Astragalus membranaceus were studied in 2021/2022 in the lower reach of the Wuding River.The re-sults showed that the agronomic traits of Astragalus membranaceus,such as the plant height,stem diameter,branch number,crown diameter and dry weight per plant,would first increase and then de-crease as planting density increased.Astragalus membranaceus of medium planting density presented a better overall agronomic trait.The yield of low planting density treatment was lower,while the high planting density weakened the forage quality and lodging resistance,and increased the competition for soil nutrients,light and other conditions which were unfavorable to its later growth and development.Based on the interaction effects of agronomic traits,yield and quality,the optimal planting density recommended is 125000 plants·hm-2,and the row spacing is 40 cm×20 cm.关键词
膜荚黄芪/饲草产量/种植密度/农艺性状/陕北黄土高原区Key words
Astragalus membranaceus/forage grass/planting density/mowing period/agronomic traits/yield/quality分类
农业科技引用本文复制引用
崔靖靖,朱容静,付咪,张楠,贺学林..种植密度对饲用膜荚黄芪农艺性状和产量的影响[J].陕西林业科技,2023,51(4):28-34,7.基金项目
陕西省科技厅自然科学研究计划重点项目(2021NY-093) （2021NY-093）
榆林市科技局产学研合作项目(CXY-2021-86). （CXY-2021-86）
