临安雷竹种植条件下土壤养分的变化  

A Study on the Change in Soil Nutrients under the Condition of Bamboo Shoot Planting in Lin'an

作　　者：徐祖祥 陈丁红[2] 李良华 楼中[2] 杨文叶 

机构地区：[1]浙江省杭州市植保土肥总站,杭州310020 [2]浙江省临安市农业局,浙江临安311300 [3]浙江省临安市锦城街道农办,浙江临安311300

出　　处：《中国农学通报》2010年第13期247-250,共4页Chinese Agricultural Science Bulletin

基　　金：浙江省科技厅项目(2009070009);浙江省农业综合开发办项目(200909001)

摘　　要：临安雷竹种植条件下由于长期偏施化学氮肥后,使雷竹生长所需的养分与投入的肥料养分不平衡,导致土壤养分失衡,引起土壤退化。经连续8年对2种主要土壤长期肥力定位监测点土样分析,通过对比2002、2009年土壤pH、土壤养分的分析结果表明,8年后,2个定位监测点耕层土壤pH分别从4.74和5.14下降到3.39和4.58;土壤有机质含量从29.6g/kg和26.96g/kg增加到50.67g/kg和42.84g/kg;全氮含量从1.70g/kg和2.16g/kg增加到2.98g/kg和2.59g/kg;全磷含量从0.76g/kg和0.94g/kg增加到1.27g/kg和1.44g/kg;全钾含量从29.1g/kg和32.4g/kg增加到33.4g/kg和38.7g/kg。连续8年种植雷竹后,土壤速效氮、有效磷和速效钾含量均有不同程度增加,但有效硼、锌、锰、铜等土壤微量元素含量分别下降,特别是土壤交换性H+、Al3+离子含量增加,而交换性盐基Ca2+、Mg2+、K+、Na+离子总量减少,导致土壤盐基饱和度下降。因此,监测结果表明,连续种植雷竹的土壤会显现大量元素含量增加,微量元素减少,土壤酸度增强的趋势。Due to the long-term partial application of chemical nitrogen fertilizer under the condition of bamboo shoot （CV. Ventricousinternode） planting in Lin＇ an, output of nutrients in the soil, which will probably result degradation. By comparing the soil analysis data of 2002 and two fixed-location soil fertility monitoring sites under the showed that eight years later, pH values of two plough-layer there may be a difference between the input and in the out-of-balance of soil nutrients and soil 2009 gathered from two main types of soils on the condition of bamboo shoot planting, the results soils fell respectively from 4.74 and 5.14 to 3.39 from 29.60 g/kg and 26.96 g/kg to 50.67 g/kg and 42.84 g/kg; total N from 1.70 g/kg and 2.16 g/kg to 2.98 g/kg and 2.59 g/kg; total P from 0.76 g/kg and 0.94 g/kg to 1.27 g/kg and 1.44 g/kg; total K from 29.10 g/kg and 32.40 g/kg to 33.40 g/kg and 38.70g/kg. Moreover, an increase at a different extent was observed when comparisons were made in the contents of soil available N, P and K, but a decrease in the contents of available B, Zn, Mn and Cu was found when made comparisons. After the bamboo shoot growth for the lasting eight years, an increase in soil exchangeable H＋ and Al3＋, along with a decrease in the total amount of soil exchangeable Ca2＋, Mg2＋, K＋ and Na＋, has resulted in a fall in base-saturation percentage. As a conclusion, there was an increase in the content of soil macronutrients and in soil acidity but a fall in the content of soil micronutrients under the condition of consecutive bamboo shoot growth for years in Lin＇ an.

关 键 词：雷竹 土壤养分 变化 临安 

分 类 号：S644.2[农业科学—蔬菜学] S158.2[农业科学—园艺学]