不同播种处理对紫花苜蓿种子萌发和幼苗生长的影响  

Effects of Different Sowing Treatments on Seed Germination and Seedling Growth of Medicago sativa

作　　者：杨小玲 袁胜洋[1] 杨贵侠 李思环 杨烜宇 刘先峰[1] YANG Xiaoling;YUAN Shengyang;YANG Guixia;LI Sihuan;YANG Xuanyu;LIU Xianfeng(College of Civil Engineering,Southwest Jiaotong University,Chengdu 610031,China;Shanxi Intelligent Transportation Research Institute Co.,Ltd.,Taiyuan 030026,China)

机构地区：[1]西南交通大学土木工程学院,成都610031 [2]山西省智慧交通研究院有限公司,太原030026

出　　处：《耕作与栽培》2025年第3期5-11,共7页Tillage and Cultivation

基　　金：山西交控科技研发项目(2022-JKKJ-7)。

摘　　要：以紫花苜蓿种子为试材,在黄土的土壤环境下,采用不同播种方式,研究播种方式、种子密度和播种深度对紫花苜蓿种子萌发与幼苗生长的影响。结果表明,播种深度为1 cm时,撒播方式效果较混播好,当播种深度超过1 cm时,混播方式效果更好。混播密度与植被覆盖度在一定区间呈正相关,最佳种子密度为60 g/m^(2);混播深度与植被覆盖度呈负相关,适宜的混播深度为1~3 cm。覆盖度与土体裂隙的发育呈正相关。播种方式对紫花苜蓿种子萌发和幼苗生长有较大影响,研究结果可促进紫花苜蓿在黄土区的工程应用,为黄土边坡生态防护技术提供参考。In this study,using alfalfa seeds as the test material,and in the soil environment of loess,various sowing methods were employed to investigate the effects of sowing methods,seed density,and sowing depth on alfalfa seed germination and seedling growth.The results indicated that when the sowing depth was 1 cm,broadcast sowing performed better than mixed sowing.However,when the sowing depth exceeded 1 cm,mixed sowing was more effective.There was a positive correlation between mixed sowing density and vegetation coverage rate within a certain range and the optimal seed density under the experimental conditions was 60 g/m^(2).There was a negative correlation between mixed sowing depth and vegetation coverage,with the appropriate mixed sowing depth ranging from 1-3 cm.Vegetation coverage was positively correlated with the development of soil cracks.The sowing method had a significant impact on alfalfa seed germination and seedling growth.The findings of this study could facilitate the engineering application of alfalfa in loess areas and provide guidance for ecological protection techniques on loess slopes.

关 键 词：紫花苜蓿 黄土 种子密度 播种深度 

分 类 号：S551.7[农业科学—作物学]