不同轮作方式黔产半夏土壤物理性状分析  

Analysis on Soil Physical Properties in Pinelliafields Under Different Rotation Systems in Guizhou Province

作　　者：张皓[1] 何腾兵[1,2] 林昌虎 何冠谛[4] 高安勤[1,5] 

机构地区：[1]贵州大学农学院,贵阳550025 [2]贵州大学新农村发展研究院,贵阳550025 [3]贵州省中国科学院天然产物化学重点实验室,贵阳550001 [4]贵州大学生命科学学院,贵阳550025 [5]六盘水市农业委员会,贵州六盘水553000

出　　处：《水土保持研究》2015年第3期127-131,136,共6页Research of Soil and Water Conservation

基　　金：贵州省中药现代化重大专项"贵州石斛;半夏等6种中药材产地适宜性技术评价体系构建与产业示范"子课题[黔科合重大专项字(2012)6010-3-1];贵州省科技创新人才团队建设计划项目"贵州省土壤水肥调控与农业环境污染防治科技创新人才团队"(黔科合人才团队[2013]4020);本科教学工程项目"农业资源与环境"特色专业建设

摘　　要：为解决半夏连作障碍,探究最适宜的半夏轮作方式,以4种轮作方式[与太子参、何首乌（三年生）、金荞麦（短柱型）、苦参（一年生）轮作]土壤作为研究对象,分别对土壤容重、土壤自然含水量、土壤吸湿水、土壤机械组成进行测定。结果表明：与何首乌（三年生）轮作土壤含水量高出最适含水量6.4%,不适宜种植半夏,与金荞麦（短柱型）轮作土壤含水量为30.01%,表现为最适宜。半夏与不同中草药轮作的土壤容重在0.92~1.09g/cm3之间,土壤容重与含水量之间呈现负相关的变化规律。土壤吸湿水含量总体表现为弱—中变异强度。从土壤机械组成来看,与太子参轮作、何首乌（三年生）轮作、苦参（一年生）轮作土壤物理性黏粒的含量分别为37.60%,44.60%,33.93%,与金荞麦（短柱型）轮作土壤物理性黏粒的含量为31.10%。吸湿水含量与土壤黏粒的含量呈显著的正相关。从半夏生长对土壤物理性状要求来看,4种轮作方式中以半夏与金荞麦（短柱型）轮作最优。The purpose of this paper is to solve the continuous growth obstacle of Pinellia ternata, and explore the most appropriate rotation methods of Pinellia ternata. In this article, we put the 4 kinds of rotation soil as the research objects, including Radicr Pseudostellariae, triennial Polygonurn multiflorum, the short column type of Fagopyrum cyrnosum and annual Sophora flavescens, to test soil bulk density, soil natural water content, soil hydroscopic water and mechanical composition of soil. Results showed that soil water content of triennial Polygonum multiflorum was 6.4~ above optimum moisture content and it was not suitable for cultivation of Pinellia ternata ; but Fagopyrurn cymosum was 30.01 % and was optimum for cultivation. Soil bulk density between Pinellia ternata and different Chinese herbal medicine ranged from 0.92 g/cma to 1.09 g/cma , soil bulk density and water content presented the negative correlation. The overall performance of soil hydroscopic water was that the variability coefficients belonged to the low and middle intensity. From soil mechanical composition, soil physical clay contents of Radi3c Pseudostellariae, triennial Polygonurn rnultiflorurn and the short column type of Fagopyrum cyrnosum were 37. 60%, 44. 60% and 33.93%, respectively, and annual Sophora flavescens was 31. 10%. There were significant positive correlations between hydroscopic water content and soil physical clay content. With respect to Pinellia tuber growth requirements on soil physical properties, Pinellia ternata and the short column type of Fagopyrurn cyrnosum are the best ways among the four rotation methods.

关 键 词：轮作 黔产 半夏 物理性状 

分 类 号：S153[农业科学—土壤学]