CAJ | 학술논문

该研究旨在探讨以植穴控制体作为调控水分运移的基本单元,以提高盐渍土造林成效及土地使用价值.结合土柱微宇宙试验控制技术,选取植穴控制体(PHCB)的结构因子(木本植物、植穴袋材料、覆膜材料配比、填充材料配比及填料厚度)和环境因子(地下水矿化度、土壤质地、补水量)为影响因素,设计U_(12)(12×4~3×3~4)的混合均匀试验.经回归分析筛选出PHCB最佳结构设计参数,建立植穴控制体结构因子和环境因子与含水率间关系的预测方程.分析结果显示:当每次补水量达到5.06 mm,土壤质地为轻黏土的环境条件下,木本植物选择紫叶李、植穴袋材料为麻布、PVA(polyvinyl alcohol)/VAE(vinyl acetate-ethylene copolymer emulsion)/蒙脱石的体积比按100:20:10配制成覆膜材料,秸秆、枯枝落叶和木屑以质量比1:1:2混合制成填料,可使植穴袋内的土壤含水率提高48.83%.而环境因子的地下水矿化度及结构因子填料厚度对植穴内水分运移的影响均不显著.PHCB可以有效调控盐渍土水分运移过程,是一种盐渍土生态修复方法.
해연구지재탐토이식혈공제체작위조공수분운이적기본단원,이제고염지토조림성효급토지사용개치.결합토주미우주시험공제기술,선취식혈공제체(PHCB)적결구인자(목본식물、식혈대재료、복막재료배비、전충재료배비급전료후도)화배경인자(지하수광화도、토양질지、보수량)위영향인소,설계U_(12)(12×4~3×3~4)적혼합균균시험.경회귀분석사선출PHCB최가결구설계삼수,건립식혈공제체결구인자화배경인자여함수솔간관계적예측방정.분석결과현시:당매차보수량체도5.06 mm,토양질지위경점토적배경조건하,목본식물선택자협리、식혈대재료위마포、PVA(polyvinyl alcohol)/VAE(vinyl acetate-ethylene copolymer emulsion)/몽탈석적체적비안100:20:10배제성복막재료,갈간、고지락협화목설이질량비1:1:2혼합제성전료,가사식혈대내적토양함수솔제고48.83%.이배경인자적지하수광화도급결구인자전료후도대식혈내수분운이적영향균불현저.PHCB가이유효조공염지토수분운이과정,시일충염지토생태수복방법.
In order to make a plant hole into a basic unit to regulate soil water movement, improve the forestation survival rate and land-using value of saline soil, the authors selected structure factors (including woody plant, material used for planting-hole bag, dispensation radio of membrane material, dispensation radio and thickness of filling material) of planting hole control body (PHCB) and environment factors (including groundwater mineralization, soil texture and supplementary water capacity) as influencing factors, combined microcosm experiment technology, and used a hybrid homogeneous design U_(12) (12×4~3×3~4) to arrange the experiments for obtaining the optimal configuration parameters and establishing a predictive equation which could show the relationships between influencing factors and soil moisture. The results of regression analysis indicated that: on condition that the supplementary water capacity was up to 5.06 mm, and light clay soil as soil texture, prunus cerasifera as woody plant, linen used for material of the plant hole, membrane material made of PVA (polyvinyl alcohol), VAE (vinyl acetate-ethylene copolymer emulsion) and montmorillonite with volume ratio of 100:20:10, and filler made from straw, litter and wood chips with mass ratio of 1:1:2, soil moisture could be increased 48.83% inside the planting hole. While the groundwater mineralization and thickness of filler material were not significant influences on water movement in the plant hole. PHCB is able to be used to regulate the process of soil water movement effectively, which is a method for ecological restoration of saline soil.