摘要
【目的】研究不同杂草管理方式对广西柑橘果园土壤水分变化的影响,为提高柑橘种植管理水平提供理论依据。【方法】设置防草布覆盖(grass-proof cloth mulching,GPM)和自然生草刈割(natural grass mowing,NGM) 2种杂草管理方式的田间试验,以常规喷施除草剂为对照(CK),采用土壤水分监测传感器检测不同处理0~60 cm土层的土壤含水量,分析各处理在柑橘周年生长期的土壤含水量变化特征。【结果】橘园降雨集中在2020年10月—2021年2月,各处理5 cm土层的土壤平均含水量受降雨的强烈影响,表现出较大波动,其中GPM处理变化最大,为29.2%~45.0%。除20 cm土层外,GPM和NGM处理均能提高各土层的土壤含水量。GPM和NGM处理可显著提高柑橘花芽分化及开花坐果期、幼果期40和60 cm以及0~60 cm土层的土壤平均含水量,但对5和20 cm土层的平均含水量无显著影响;在果实膨果期、转色及成熟期,GPM和NGM处理可显著提高5、40和60 cm以及0~60 cm土层的平均土壤含水量。在柑橘全生育期,GPM和NGM处理的60 cm土层土壤平均含水量增幅较大,分别比CK处理提高5.2%~7.4%和5.0%~7.4%。【结论】防草布覆盖和自然生草刈割处理均能提高土壤含水量,对橘园土壤蓄水保墒效果较好,推荐作为广西橘园杂草管理的方式。
[Purpose]To study the effects of different weed management methods on soil watercontent changes in citrus orchards in Guangxi,providing a theoretical basis for improving the man-agement level of citrus planting.[Methods]Two weed management methods were set,which were named grass-proof cloth mulching (GPM) and natural grass mowing (NGM) with field experiment,and the conventional herbicide spraying treatment was taken as the control (CK), soil moisture monit-oring sensor was used to detect the soil water content of different treatments in the 0-60 cm soil layer,and the characteristics of soil water content changes in each treatment during the citrus annual growthperiod was analyzed. [Results]The rainfall in citrus orchard mainly concentrated from October2020 to February 2021. The average water content of soil in the 5 cm soil layer was strongly affectedby the rainfall under each treatment, and showed great fluctuations. The soil water content with GPMtreatment had the greatest change, which was from 29.2% to 45.0%. Soil water content in all soil lay-ers was increased under GPM and NGM treatment except 20 cm soil layer. GPM and NGM treat-ments could significantly increase the average water content of 40, 60 and 0-60 cm soil layers at theflower bud differentiation, flowering and fruit setting, and young fruit stages, but had no significanteffect on the average water content in 5 and 20 cm soil layers. GPM and NGM treatments could alsosignificantly increase the average water content in the soil layer of 5, 40, 60 and 0-60 cm at the fruitexpansion, color transformation and maturation. In the whole growth period of citrus, GPM and NGMtreatments increased the average water content of 60 cm soil layer by 5.2%-7.4% and 5.0%-7.4%compared with CK treatment, respectively. [Conclusion]GPM and NGM can increase soil watercontent, and have a good effect on soil water storage and soil water conservation. They are recommen-ded as a weed management method of citrus orchard in Guangxi.
作者
路丹
韦文茵
黄雁飞
刘淑仪
范晓苏
邓婉珍
沈方科
黄太庆
LU Dan;WEI Wenyin;HUANG Yanfei;LIU Shuyi;FAN Xiaosu;DENG Wanzhen;SHEN Fangke;HUANG Taiqing(Guangxi Key Laboratory of Agro-Environment and Agroproducts Safety,National Demonstration Center for Ex-perimental Plant Science Education,College of Agriculture,Guangxi University,Nanning 530004,China;Agricul-tural Resource and Environment Research Institute,Guangxi Academy of Agricultural Sciences,Nanning 530007,China;Guangxi Academy of Agricultural Sciences,Nanning 530007,China)
出处
《云南农业大学学报(自然科学版)》
北大核心
2025年第2期84-93,共10页
Journal of Yunnan Agricultural University:Natural Science
基金
广西农业科学院科技发展基金项目(桂农科2023JZ02)
广西重点研发计划项目(桂科AB1850024)
大学生创新创业训练计划自治区级项目(201910593303,S202310593352)。
关键词
防草布覆盖
自然生草刈割
土壤含水量
橘园
杂草管理
grass-proof cloth mulching
natural grass mowing
soil water content
citrus orchard
weed management
