摘要
为检测牧草对粤北南雄红壤地种植的耐受性,以山毛豆Tephrosia candida、木豆Cajanus cajan、象草Pennisetum purpureum、菊苣Cichorium intybus、糖蜜草Melinis minutiflora和晚熟狼尾草Pennisetum alopecuroides 6种牧草为试验材料,在广东南雄红壤地试验种植,测定种植一年后土壤的容重、孔隙度、pH、有机质、电导率等土壤指标,分析比较不同牧草对土壤结构变化影响的差异性。结果表明:(1)种植牧草后,土壤的pH值得到不同程度提升,其中菊苣使土壤pH值提升了0.54,电导率较对照组增加了30.1μs/cm;(2)木豆对土壤容重影响最大,降幅达16.3%,而山毛豆和象草更有利于土壤有机质富集;(3)山毛豆、木豆、菊苣和晚熟狼尾草均有效提高了土壤总孔隙度,并且使得非毛管孔隙度占总孔隙度的比例由种植前的25.96%提升至30.17%~43.39%;(4)6种牧草与容重和总孔隙度分别呈显著正相关和极显著负相关,说明土壤结构变化对牧草有影响,同时不同牧草对土壤结构的影响存在差异性。
In order to assess the tolerance of forage in the red soil of Nanxiong,northern Guangdong,the experiment used six forage:They are Tephrosia candida,Cajanus cajan,Pennisetum purpureum,Cichorium intybus,Melinis minutiflora and Pennisetum alopecuroides which were experimented and planted in the red soil of Nanxiong,Guangdong.By observing the growth of these forage plants in red soil and measuring soil properties such as bulk density,porosity,pH,organic matter and conductivity one year later,an analysis of variance was conducted to compare the differential effects of different forages on soil quality.The results show that(1)after planting the forage,the pH value of the soil was improved to varying degrees.Notably,C.intybus increased the soil pH value by 0.54,resulting in an increase in conductivity by 30.1μs/cm compared to the control group;(2)the maximum reduction in soil bulk density was achieved by C.cajan,with a decrease of 16.3%,while T.candida and P.purpureum were more conducive to the enrichment of soil organic matter;(3)T.candida,C.cajan,C.intybus and P.alopecuroides all effectively enhanced the total soil porosity and the proportion of non-capillary porosity in total porosity from 25.96%to 30.17%-43.39%;(4)forage varieties showed a significant positive correlation with bulk density and a highly significant negative correlation with total porosity,indicating that soil structure changes have an impact on forage and different forages have differential effects on soil structure.
作者
邹静远
崔育
曾宪煌
张斌
高祖坚
陈平
周胜
张晖
ZOU Jingyuan;CUI Yu;ZENG Xianhuang;ZHANG Bin;GAO Zujian;CHEN Ping;ZHOU Sheng;ZHANG Hui(Zhongkai University of Agriculture and Engineering,Guangzhou,Guangdong 510225,China;Guangdong Yuexiong Forestry Investment Co.LTD,Shaoguan,Guangdong 512400,China)
出处
《林业与环境科学》
2024年第1期91-98,共8页
Forestry and Environmental Science
基金
广东省普通高校优稀特色经济林果工程技术研究中心(2022GCZX002)
广东省土地复垦植被恢复工程技术研究中心(粤科函政字〔2013〕1589号)
广东省技术服务项目(2022440111000724)。
关键词
牧草
红壤
南雄
种植
forage
red soil
Nanxiong
plantation
