【摘要】 探究施用保水剂对材用毛竹林生长、土壤物理性状以及经济效益的影响，为经营材用毛竹林提供科学依据。以材用毛竹林为研究对象，以不施保水剂为对照（CK），研究T₁穴施(30 g·株^-1)、T₂沟施(90 kg·hm^-2)、T₃沟施(180kg·hm^-2)、T₄沟施(270 kg·hm^-2)4种处理对毛竹胸径、土壤理化性质及经济效益影响的规律。T₁处理林分胸径增长率最高，林分平均胸径从9.40 cm增加到9.93 cm，显著高于其他处理。不同处理毛竹林土壤相对含水量的大小排序为T₄（26.36%）>T₂（26.20%）>T₃（24.96%）>T₁（24.26%）>CK（20.92%），施保水剂毛竹林土壤相对含水量显著高于对照，但不同处理间差异不显著。不同处理毛竹林地土壤物理性状综合得分,大小排序为T₄（0.6813）>T₃（0.5086）>T₁（0.4907）>T₂（0.4608）>CK（0.4199）。T₁处理的净收益最高，为285.25元·hm^-2，与CK相比，增幅为12.3%；其他3个处理的净收益均低于对照处理，T₄处理最低。从经济效益角度来看，每株穴施30 g保水剂，能满足毛竹林生长的水分需求，提高毛竹林的经济效益。更多还原

【Abstract】 In order to provide scientific management basis for timber Phyllostachys edulis forest,we explored the effects of water retaining agent on the growth,soil physical properties and economic benefitst.Taking Ph.edulis forest as experimental material,water retaining agen treatment T₁（30g each plant）,T₂(90 kg·hm^-2),T₃(180 kg·hm^-2) and T₄(270 kg·hm^-2),with no water retaining agent as the reference （CK）,the influence on stand average breast diamete,soil physical properties and economic benefits of Ph.edulis were studied.The growth rate of stand average breast diamete of T₁was the highest,which was significantly higher than other treatments,increased from 9.40 cm to 9.93 cm.The order of soil relative water content under different treatments was T₄（26.36%）>T₂（26.20%）>T₃（24.96%）>T₁（24.26%）>CK （20.92%）,the soil relative water content of Ph.edulis forest with water retaining agent was significantly higher than the control,but there was no significant difference among different water retaining agent treatments.The order of comprehensive scores of soil physical properties of Ph.edulis forest with different water retaining agent treatments was T₄（0.6813）>T₃（0.5086）>T₁（0.4907）>T₂（0.4608）>CK （0.4199）,the comprehensive scores of soil physical properties treated with water retaining agent were higher than the control.The net income of T₁was the highest and T₄was the lowest.Compared with CK,T₁ increased the income by 285.25 yuan·hm^-2,increased by 12.3%.The net income of Ph.edulis forest treated with other water retaining agent was lower than the control.From the perspective of economic benefits,applying 30g water retaining agent to each plant could meet the water condition need for the growth of Ph.edulis forest and improve the economic benefits.更多还原