雷竹笋用林覆盖措施对土壤养分的影响  

Effects of Mulching Measures on Soil Nutrients of Phyllostachys praecox Shoot-producing Forest

作　　者：高志勤[1] 江豹彪 王新屯 王剑勇 戴尚雨 Gao Zhiqin;Jiang Baobiao;Wang Xintun;Wang Jianyong;Dai Shangyu(Environment Faculty of Ningbo Urban Vocation Technology College, Ningbo 315100,Zhejiang,China;Subdistrct Office of Yuelin Street,Fenghua 315502,Zhejiang,China;Bureau of Agriculture and Forestry,Yinzhou County,Ningbo 315100,Zhejiang,China;Yongle Orchard,Fenghua 315502,Zhejiang,China;Taizhou An Bei Agricultural Materials Company,Tiantai 317200,Zhejiang,China)

机构地区：[1]宁波城市职业技术学院景观生态学院,浙江宁波315100 [2]浙江省宁波奉化区岳林街道办事处,浙江奉化315500 [3]浙江省宁波市鄞州区农林局,浙江宁波315100 [4]浙江省奉化永乐果园,浙江奉化315502 [5]浙江省台州安倍科农资有限公司,浙江天台317200

出　　处：《世界竹藤通讯》2019年第3期26-29,共4页World Bamboo and Rattan

基　　金：宁波市自然科学基金项目“雷竹笋用林土壤酸度演变特征及其反馈机制的研究”(2016A610037)

摘　　要：以砻糠为覆盖材料,试验研究了雷竹林不同覆盖次数对林地土壤养分的影响。结果表明:覆盖措施减少了林地土壤的水解氮和速效磷含量,减少幅度随着覆盖次数的增加而增大,土壤速效钾含量却呈现相反的变化趋势,覆盖次数越多土壤钾素积累越多;覆盖增加了土壤有机质含量和土壤阳离子交换量,土壤保肥性增强;覆盖改善了土壤的物理性质,土壤容重减小,保水、通气性增强;多次覆盖使土壤的酸性减弱,pH值增大,表层土壤酸性强度减弱,pH值增高趋势因施肥和覆盖年限而异。因此,建议改变林地经营模式或者采用间隔带状覆盖的形式降低土壤劣变现象的出现。This paper experiments the effects of the different mulching times on the soil nutrients of Phyllostachys praecox stands using rice chaff as the mulching materials. The results show that mulching makes the soil hydrolytic nitrogen and available phosphorus in the topsoil layer ( 0-10 cm) decrease,and the extent of the decrease increases with the increased times of mulching,while the soil available potassium content increases with the increased times of mulching. In the meantime,the content of soil organic mater and cation exchange capacity of mulched stands grow, with the soil fertility maintenance improved. Mulching also improves the soil physical properties such as lower soil bulk density and enhanced moisture retention and air permeability. Increased times of mulching makes the soil acidity weaker,pH value increased and the acidity intensity of topsoil declining,and the trend of pH value increase is different due to the varied fertilization and years of mulching. Thus it is proposed to curb the soil quality decrease by changing forestland management model or adopting gap zone mulching method.

关 键 词：雷竹 笋用林 林地覆盖 PH值 土壤养分 

分 类 号：S795[农业科学—林木遗传育种] S714.8[农业科学—林学]