中国草地学报2025，Vol.47Issue(3)：65-73,9.DOI:10.16742/j.zgcdxb.20230334
秋播和磷酸二铵对紫花苜蓿产量和品质的影响
Effects of Autumn Sowing and Different Rates of Diammonium Hydrogen Phosphate on the Yield and Quality of Alfalfa
摘要
Abstract
This study investigated the effects of varying autumn sowing dates and diammonium hydro-gen phosphate(DAP)application rates on the yield and quality of Medicago sativa L.'Zhongcao No.3'in Hohhot.An experiment was conducted in 2021 with three autumn sowing dates:July 31(T1),August 8(T2),and August 16(T3),combined with five DAP application rates:0 kg/hm2(CK),40 kg/hm2(P1),70 kg/hm2(P2),100 kg/hm2(P3),and 130 kg/hm2(P4).Annual yield,crude protein,crude fat,acid detergent fiber(ADF),neutral detergent fiber(NDF),crude ash,and relative feed value(RFV)were measured and compared across the different sowing dates and fertilization treatments.The results showed that delaying the autumn sowing date generally led to a decrease in alfalfa yield and an improvement in for-age quality.However,the application of an appropriate amount of DAP fertilizer in conjunction with delayed autumn sowing could mitigate the yield of alfalfa and further enhance alfalfa quality.Under the con-dition of this study in Hohhot,alfalfa sown on August 8 with a DAP application rate of 100 kg/hm2 achieved a favorable combination of high yield and good quality.关键词
紫花苜蓿/秋播/磷酸二铵/产量/品质Key words
Alfalfa/Autumn sowing/Diammonium hydrogen phosphate/Yield/Quality分类
农业科技引用本文复制引用
王旗旗,解继红,孙震,蔡婷,苑峰,刘亚玲,李杰,王运涛..秋播和磷酸二铵对紫花苜蓿产量和品质的影响[J].中国草地学报,2025,47(3):65-73,9.基金项目
内蒙古自治区"揭榜挂帅"项目(2022JBGS00160403) （2022JBGS00160403）
呼和浩特市"揭榜挂帅"项目(2024-揭榜挂帅-农-2-1-2-2) （2024-揭榜挂帅-农-2-1-2-2）
国家草业技术创新中心(筹)重大创新平台建设专项(CCPTZX2023B04-1-2) （筹）
科技创新2030—重大项目(2022ZD0401202) （2022ZD0401202）
呼和浩特市科技计划项目重大科技专项(2021-重-社-2) （2021-重-社-2）
