甘肃宁县湘乐塬不同产量苹果园深层土壤养分含量及分布特征
Study on Nutrient Content and Characteristics in Depth Soil of Apple Orchards in Xiangleyuan Area of Ning County of Gansu Province
崔兴莉 1郭麦霞 2黄茂林 3李春荣 3左利萍3
作者信息
- 1. 甘肃省合水林业总场,甘肃合水745400
- 2. 陇东学院,甘肃庆阳745000
- 3. 甘肃省庆阳市林业局,甘肃庆阳745000
- 折叠
摘要
[目的]分析不同产量苹果园土壤氮、磷、钾和有机质含量的差异及其在土壤剖面的分布特征.[方法]通过测定甘肃宁县湘乐塬22年生高、中、低产量乔化红富士果园0～200 cm土层土壤氮、磷、钾和有机质含量,比较分析土壤养分含量及分布特征.[结果]湘乐塬22年生高、中产园乔化苹果树一般在地表以下40 ～60 cm根际存在一个吸收活跃的土壤微区域,在90～ 120 cm土层存在一个有机质、氮、磷、钾等的土壤累积层,构成土壤营养缓冲库.高产园土壤营养缓冲库累积量大,中产园土壤累积量小,低产园不明显.[结论]湘乐塬高产苹果园较深土壤层存在营养缓冲库,养分累积一般不会造成地下水体污染,且是苹果因果树可持续高产的基础之一.
Abstract
[Objective] The study aimed to determine soil nitrogen,phosphorus,potassium and organic matter content and soil profile distribution characteristics in different yield orchard soils.[Method] By measuring the content of nitrogen,phosphorus,potassium and organic matter in cm 0-200 soil of 22 year old high,medium and low yield apple orchards in Xiangleyuan Area of Gansu Province,the content and distribution characteristics of soil nutrients were compared and analyzed.[Result]There have a absorption of active soil microarea in 40 to 60 cm below the surface.There also have a accumulation layer of soil that contains organic,nitrogen,phosphorus and potassium,which consist of soil nutrient storage buffer.The cumulative amount of soil nutrient buffer pool of high yield garden is big,the middle garden soil is small,and the low yield garden is not obvious.[Conclusion] Nutrient accumulation of deeper soil layer does not generally cause underground water pollution in Xiangleyuan Aera,and is one of the basis of sustainable high yield orchards and trees.
关键词
苹果园/土壤养分/分布特征Key words
Apple orchard/Soil nutrients/Distribution characteristic引用本文复制引用
基金项目
庆阳市青年创新人才培养资助项目()
威阳德丰公司试点项目()
出版年
2016
国家科技期刊平台
NSTL
维普
万方数据