作物杂志Issue(5)：86-92,7.DOI:10.16035/j.issn.1001-7283.2025.05.012
生物硫调理剂对盐碱地苜蓿产量、品质及土壤理化性质的影响
Effects of Biological Sulfur Regulator on the Yield,Quality of Alfalfa and Soil Physicochemical Properties in Saline-Alkali Land
摘要
Abstract
To study the effects of different application rates of biological sulfur regulators on the yield,quality,and soil physicochemical properties of alfalfa in saline-alkali land in eastern Hebei Province,alfalfa fields were applied at application levels of 3,6,9,and 12 t/ha on November 25,2023.The results showed that with the increasing of the application amount of biological sulfur regulator,the greening time of alfalfa gradually delayed,and the biological sulfur regulator could prolong the overwintering time of alfalfa.Biological sulfur regulator could significantly improve the plant height,grass yield,and quality traits of alfalfa.The highest plant height was achieved at a rate of 9 t/ha,reached 56.9 cm.Alfalfa stem diameter,branching number,and leaf-stem ratio all performed best at a rate of 9 t/ha.Under the application rate of 9 t/ha,the yields of fresh grass and hay in the first cut were 29 254.5 kg/ha and 7045.2 kg/ha,respectively.At the same time,the crude protein and relative feeding value reached 23.23%and 179.40,respectively.The contents of crude fat,calcium,and phosphorus were 2.26%,1.67%and 0.42%,respectively,which were significantly higher than other treatments.After the experiment,the soil pH and salt content were the lowest at a dosage of 12 t/ha,which were 8.97 and 0.285%,respectively;the organic matter,microbial carbon and microbial nitrogen contents were the highest at 7.45 g/kg,61.02 mg/kg and 6.61 mg/kg,respectively,but there were no significant difference compared to the 9 t/ha dosage.Therefore,the optimal application rate of biological sulfur regulator for alfalfa in saline-alkali land was 9 t/ha.关键词
生物硫调理剂/盐碱地/苜蓿/产量/品质/土壤性状Key words
Biological sulfur regulator/Saline-alkali land/Alfalfa/Yield/Quality/Soil properties引用本文复制引用
贾艳丽,张洪发,刘桂霞,黄素芳,屈新月,岳明强,韩佳婷,徐玉鹏,刘青松..生物硫调理剂对盐碱地苜蓿产量、品质及土壤理化性质的影响[J].作物杂志,2025,(5):86-92,7.基金项目
国家草业技术创新中心项目(CCPTZX2024GJ02-1-4) （CCPTZX2024GJ02-1-4）
河北省现代农业产业技术体系建设项目(HBCT2023160203) （HBCT2023160203）
