摘要
【目的】筛选黄土高原半干旱区适宜种植的最佳绿肥品种,为在黄土高原半干旱区合理种植和绿肥利用、科学休耕养地提供理论依据.【方法】采用田间试验,设置了休闲(CK)以及种植箭筈豌豆(T1)、沙打旺(T2)、大豆(T3)、红豆草(T4)、蚕豆(T5)、玉米(T6)、毛苕子(T7)、紫花苜蓿(T8)、豌豆(T9)10个处理,分析了不同处理对土壤理化性质的影响.【结果】除pH值外,各处理2018年土壤有机质、速效氮、速效磷、速效钾、全氮、全磷、全钾含量均高于2017年,其中种植红豆草pH值降幅最大,速效钾升高显著;种植紫花苜蓿、沙打旺分别显著提高有机质,全氮和全钾;种植箭筈豌豆、毛苕子、豌豆分别显著提高全磷、速效氮、速效磷含量.土壤养分各指标间有一定的相关性.主成分分析表明,种植多年生豆科绿肥红豆草、紫花苜蓿、沙打旺的改土培肥效果优于休闲,种植一年生绿肥作物箭筈豌豆、大豆、蚕豆、玉米、毛苕子及豌豆,其培肥地力的效果均不及休闲.【结论】在黄土高原半干旱区,红豆草、紫花苜蓿和沙打旺是可推广的优质豆科绿肥.
【Objective】To screen the optimum green manure cultivar in the semi-arid area of Loess Plateau,and to provide theoretical basis for rational planting and utilization of green manure in the semi-arid area of Loess Plateau.【Method】A field experiment with 10 treatments was conducted as:fallow(control),planting Vicia sativa(T1),Astragalus adsurgens(T2),Glycine max(T3),Onobrychis viciaefolia(T4),Vicia faba(T5),Zea mays(T6),Iicia villosa(T7),Medicago sativa(T8),and Pisum sativum(T9).The effects of different treatments on soil physical and chemical properties were analyzed.【Result】Except for pH value,the content of soil organic matter,available nitrogen,available phosphorus,available potassium,total nitrogen,total phosphorus and total potassium of all treatments in 2018 were higher than those in 2017.Among them,O.viciaefolia caused the most significant the decrease of pH value and the increase of available potassium.M.sativa and G.max resulted in the increase of soil organic matter,soil total nitrogen and total potassium contents.V.sativa,I.villosa and P.sativum significant increased the content of total phosphorus,available nitrogen and available phosphorus.There was a certain correlation between soil nutrient indexes among treatments.Principal component analysis showed that planting perennial legume green manures of O.viciaefolia,M.sativa,and A.adsurgens improved the soil fertility than the fallow,whereas planting annual legum green manures had lower soil fertility than the fallow.【Conclusion】O.viciaefolia,M.sativa,and A.adsurgens are optimum leguminous green manure in the semi-arid area of Loess Plateau.
作者
刘雪强
南丽丽
郭全恩
付双军
谭杰辉
李冰月
LIU Xue-qiang;NAN Li-li;GUO Quan-en;FU Shuang-jun;Tan Jie-hui;LI Bing-yue(College of Pratacultural Science,Gansu Agricultural University,Key Laboratory of Grassland Ecosystem of Ministry of Education,Pratacultural Engineering Laboratory of Gansu Province,Sino-U.S.Centers for Grazing land Ecosystem Sustainability,Lanzhou 730070,China)
出处
《甘肃农业大学学报》
CAS
CSCD
北大核心
2020年第1期145-152,共8页
Journal of Gansu Agricultural University
基金
农业部种植业管理司耕地质量保护专项“轮作休耕试点区域耕地质量监测”(10171352501917)
国家自然科学基金项目(31460630)
省部共建草业生态系统教育部重点实验室暨草学甘肃省优势特色学科建设项目(GAU-XKJS-2018-013)
现代农业产业技术体系建设专项(CARS-34).
关键词
绿肥作物
黄土高原
土壤理化性质
主成分分析
green manures
loess plateau
soil physicochemical property
principal component analysis
作者简介
第一作者:刘雪强,硕士研究生.E-mail:1285961669@qq.com;通信作者:南丽丽,教授,博士,主要从事牧草栽培与育种研究,E-mail:nanll@gsau.edu.cn。
