文献类型：期刊文献

中文题名：两种土壤改良剂对3种牧草生长及土壤含水量的影响

英文题名：Effects of soil conditioners on growth of different forage species and soil moisture in karst region

作者：肖兴艳[1] 张雷一[1] 刘方[1] 姚斌[2] 龙健[3]

第一作者：肖兴艳

机构：[1]贵州大学资源与环境工程学院;[2]中国林业科学研究院荒漠化研究所;[3]贵州师范大学贵州省山地环境重点实验室

年份：2015

卷号：32

期号：11

起止页码：1887-1891

中文期刊名：草业科学

外文期刊名：Pratacultural Science

收录：CSTPCD;;北大核心:【北大核心2014】；CSCD:【CSCD2015_2016】；

基金：贵州省科技厅农业科技攻关项目(黔科合NY[2013]3075号);国家林业局948项目(2013-4-80)

语种：中文

中文关键词：牧草;土壤改良剂;土壤水分;喀斯特

外文关键词：forage species; soil conditioner; soil moisture; karst

分类号：S156.2

摘要：在盆栽试验条件下种植雀稗(Paspalum thunbergii)、黑麦草(Lolium perenne)、拉巴豆(Dolichos lablab),研究土壤改良剂对喀斯特不同品种牧草生长及土壤含水量的影响。在相同的土壤条件及水分管理状态下,3种牧草的生物量存在明显的差异,尤其是秸秆炭处理的3种牧草平均值分别为1.57、0.25、7.70 g·株-1,具体表现为拉巴豆>雀稗>黑麦草;但土壤含水量的变化存在显著差异(P<0.05),种植雀稗的平均土壤含水量最高分别比黑麦草和拉巴豆高15.4%和31.1%,雀稗的土壤持水能力明显高于拉巴豆。土壤添加5%秸秆炭后,在连续10 d不降雨的条件下,雀稗、黑麦草和拉巴豆的平均土壤含水量分别比对照高17.9%、17.4%和19.8%。本研究显示,施用秸秆炭对牧草生长具有促进作用,尤其是雀稗在秸秆炭处理下的生物量分别比对照和秸秆提高了9.5%和30.6%,种植雀稗有利于提高喀斯特土壤含水量,秸秆炭添加后其提高效果更显著。
In the present study,the effects of soil conditioners on growth of different forage species including Paspalum thunbergii,Lolium perenne,Dolichos lablab and soil moisture on karst were evaluated using pot experiments.Under the same soil conditions and water management,there were obvious differences（ P〉0. 05） between the biomass of these three forages which were D. lablab P. thunbergii L. perenne whereas the soil moisture change in the opposite order and differed significantly. The soil moisture in the field of P. thunbergii increased by 15. 4% and31. 1% compared with that of L. perenne and D. lablab,respectively. The soil water holding capacity of P. thunbergii was obviously higher than that of D. lablab. With the conditions of no precipitation for 10 days and 5% straw biochar,the soil moisture of P. thunbergii,D. lablab and L. perenne,increased 17. 9% 、17. 4% and 19. 8%,respectively. The experimental results indicated that the application of P. thunbergii could increase the soil moisture and the improvement can be promoted by adding straw biochar.