草业学报2026，Vol.35Issue(2)：54-67,14.DOI:10.11686/cyxb2025102
不同气候和土壤条件下施肥类型影响紫花苜蓿种子产量的整合分析
A meta-analysis on the effect of fertilizer type on alfalfa seed yield under various climate and soil conditions
摘要
Abstract
Supply of high-quality forage in sufficient quantity is a fundamental requirement for the development of efficient and sustainable animal production systems.To attain this goal,continuous expansion of the planting area of high-quality forages such as alfalfa is required.There is thus an urgent need to expand alfalfa seed production to meet the demand for alfalfa planting,but there remains a lack of information about effects of fertilization on alfalfa seed yield under different climatic and soil conditions.This study comprised a meta-analysis to investigate the effects of different fertilizer applications on alfalfa seed yield in China and explored the interactions between the fertilizer effect and climate and soil conditions.The results showed:1)Fertilization could significantly increase alfalfa seed yield,with the greatest yield increase observed with the application of micronutrient fertilizers alone,while the application of potassium fertilizer alone and the combined application of nitrogen and potassium fertilizers led to yield reduction.2)With increase in annual precipitation,the yield-enhancement effect of single fertilizer applications weakened,while the yield-enhancement effect of multi-fertilizer applications was strengthened.Higher annual temperatures resulted in weakening of the yield-enhancement effect,except in the case of micronutrient fertilizers alone.3)The effect of soil factors on the fertilization effect varied significantly among different fertilization categories.Higher soil organic matter and total nitrogen content enhanced the yield-enhancement effect of most fertilization categories,while slightly weakening the yield-enhancement effect of micronutrient fertilizer application alone.Higher soil alkali-hydrolyzable nitrogen and available phosphorus content reduced the yield-enhancement effect of nitrogen and potassium application alone but increased the yield-enhancement effect of phosphorus application alone,with inconsistent effects on the yield-enhancement effects of multi-fertilizer applications.Higher soil available potassium content increased the yield-enhancement effect of all fertilization categories.In summary,this study provides guidance for optimizing fertilization management measures for alfalfa for seed production in different climatic regions and for different soils in China.关键词
紫花苜蓿/种子产量/施肥类型/施肥效应/整合分析Key words
Medicago sativa/seed yield/type of fertilization/fertilizer effect/meta-analysis引用本文复制引用
李瑒琨,本转林,张筠钰,杨惠敏..不同气候和土壤条件下施肥类型影响紫花苜蓿种子产量的整合分析[J].草业学报,2026,35(2):54-67,14.基金项目
国家重点研发计划课题(2022YFD1300801)和国家牧草产业技术体系-青藏高原牧草栽培岗位科学家项目(CARS-34)资助. （2022YFD1300801）
