毛竹林土壤磷、钾养分状况及生长效应  

Study on the soil nutrients status of phosphorus and potassium in stands of Phyllostachys pubescens and it's growth efficiency

作　　者：高志勤[1] 

机构地区：[1]宁波城市职业技术学院景观生态环境学院,浙江奉化315502

出　　处：《南京林业大学学报（自然科学版）》2010年第6期33-37,共5页Journal of Nanjing Forestry University：Natural Sciences Edition

基　　金：浙江省森林培育重中之重学科开放基金资助项目(200522)

摘　　要：运用定位研究方法,在相似经营条件下,采集高效经营的毛竹材用林、毛竹笋用林土壤样品,分析土壤速效磷、钾养分变化特征并揭示其与毛竹生长的相互关系。结果显示：不同经营目标的毛竹林对于磷、钾养分的需求和消耗存在差异,笋用林土壤速效磷含量、贮量均高于材用林,0~10 cm层次速效钾含量笋用林略高于材用林,10~20 cm层次笋用林略低于材用林;材用林与笋用林的速效钾贮量相差不显著。速效磷贮量与毛竹平均高度、眉径的生长回归模型比较接近,符合开口向下的抛物线方程,0~20 cm土层速效磷贮量与毛竹平均高度的相关方程是H=-0.014 2Xp2＋0.438 6Xp＋11.30,而与毛竹平均眉径的回归方程是D=-0.006 4Xp2＋0.225 2Xp＋8.642 8,与之对应的0~20 cm土层速效钾贮量与毛竹平均高度呈现负线性相关（H=-0.032 5Xk＋19.611）,速效钾贮量与毛竹眉径相关性不明显。因而,在安吉毛竹林区,针对不同经营目标的毛竹林地补充合理数量磷素养分和运用恰当施肥方式比施用钾素更为迫切。We revealed the change characteristics of soil nutrients of available phosphorus and potassium in the case of high effectively management manner of moso bamboo stands,in the meantime illustrated the relation between nutrients condition and moso bamboo growth.The results showed that there existed differences of requirement and consume on nutrients of available phosphorus and potassium that in the moso bamboo stands of different management objects.It was larger that the nutrients content or the storage of available phosphorus in the shoots producing stands than in culm＇s stands.While it for the content of available potassium in the soil depth of 0—10 cm of shoot＇s stands was a bitter larger than that of culm＇s stands,whereas it was lower than that in the soil depth of 10—20 cm.There didn＇t exist significant difference for available potassium storage between shoot＇s and culm＇s stands.The growth regression model of related average height or breast diameter of moso bamboo which in all experimental stands to the storage of available phosphorus of 0—20 cm was close simulated by the use of parabola equation that the orientation under the mouth,and it simulated parabola equation especially for the average height： H=-0.014 2 Xp2＋0.438 6Xp＋11.30 then for the breast diameter： D=-0.006 4Xp2＋0.225 2Xp＋8.642 8,respectively.However it appeared that related average height of moso bamboo to the storage of available potassium of soil thickness 0—20 cm was the negative linear equation： H=-0.032 5Xk＋19.611,meanwhile,it showed that there didn＇t existed obvious related average breast diameter to the storage of available potassium in the same soil layer.Therefore,it needs to be more anxious supplementary adequate amount of soil nutrients of phosphorus and applying appropriate application fertilizer than that of potassium nutrients in term of different management objects on moso bamboo stands in Anji.

关 键 词：毛竹林 速效磷 速效钾 养分特征 养分效应 

分 类 号：S718.51[农业科学—林学]