摘要
通过大田试验,采用红枣(Ziziphus jujuba)||苜蓿(Medicago sativa)间作(JA)、苜蓿单作(SA)、红枣单作(SJ)3种种植模式,研究了不同种植模式对土壤养分以及土壤微生物性状的影响。结果表明:在间作条件下,土壤pH总体表现为“先下降,后升高”的变化趋势;土壤碱解氮含量表现为SA>JA>SJ;土壤速效钾、速效磷含量均表现为JA>SJ>SA;土壤微生物数量在JA模式下最高,呈“先增加,后降低”的变化规律,土壤真菌数量和放线菌数量在7月21日达到峰值,土壤细菌数量在6月19日达到峰值;从产量来看,间作处理产量较单作处理高73%。研究结果表明:枣苜间作模式可以显著(P<0.05)增加土壤养分含量,促进微生物活性,提高土地利用率,增加产量。
In field experiments,three planting systems consisting of jujube(Ziziphus jujuba)||alfalfa(Medicago sativa)intercropping(JA),alfalfa monocropping(SA),and jujube monocropping(SJ)were applied to examine the effects of the different planting systems on soil nutrients and soil microbial properties.The results showed that under the JA system,the soil pH value tended to initially decrease,then increase;soil alkalinity nitrogen content varied in the order SA>JA>SJ;and available potassium and available phosphorus content in the soil differed in the order JA>SJ>SA.The number of soil microorganisms was the highest under the JA system,showing a pattern of an initial increase followed by a decrease.The number of soil fungi and actinomycetes peaked on July 21,and the number of soil bacteria peaked on June 19;in terms of yield,the yield under the JA system was 73%higher than that under either the SA or SJ systems.These findings show that the JA system significantly(P<0.05)increased soil nutrient content,land use efficiency,and yield while also promoting microbial activity.
作者
樊文霞
王明贵
陈国栋
李田甜
林峰
翟云龙
吴全忠
万素梅
FAN Wenxia;WANG Minggui;CHEN Guodong;LI Tiantian;LIN Feng;ZHAI Yunlong;WU Quanzhong;WAN Sumei(College of Agronomy,Tarim University,Alar 843300,Xinjiang,China)
出处
《草业科学》
CAS
CSCD
北大核心
2022年第1期39-47,共9页
Pratacultural Science
基金
塔里木大学国家级大学生创新创业训练计划项目(202010757014)
国家重点研发计划子课题(2016FYC0501407-04)。
关键词
间作
苜蓿
土壤化学性质
微生物
产量
土壤养分
土地利用率
intercropping
alfalfa
soil chemical properties
microbes
production
soil nutrients
land use efficiency
