摘要
摸清陕西省关中甜樱桃种植区的土壤肥力特征,是其科学合理施肥的重要依据。本研究采集了该地区73个有代表性甜樱桃果园的土壤样品,测定了土壤p H值、有机质、全氮、有效磷和速效钾等土壤肥力指标,并用ARCGIS软件绘制了土壤肥力空间分布图。结果表明:关中地区樱桃果园土壤p H值较高,79.5%的果园土壤呈碱性或强碱性,主要包括关中地区西部、东部及东北部大部分县市;87.6%的樱桃种植区土壤有机质含量较低,仅韩城市部分区域樱桃种植区有机质含量达到中等及中等以上水平;关中西部樱桃种植区土壤全氮含量适宜,但东部土壤全氮含量较低;关中樱桃种植区土壤有效磷和速效钾含量整体上处于中等或中等以上水平,仅有9.6%的樱桃园土壤有效磷较为缺乏。综上所述,陕西关中地区樱桃园应重视土壤改良,以降低土壤p H值及增加有机肥投入量,关中东部地区樱桃园需要增施氮肥,宝鸡市陈仓区和汉中市西乡县中部地区樱桃园需要酌情增加磷肥投入量。
Understanding soil fertility status is important for the scientific and reasonable fertilizer application of sweet cherry.An investigation was conducted on the spatial distribution ofthe soil fertility insweet cherry orchards in Guanzhong area of Shaanxi province,China.73 typical sweet cherry orchards were investigated,and soil pH,the content of organic matter,total nitrogen(N),available phosphorus(Olsen-P)and available potassium(K)were measured.The data indicated that soils of most of(79.5%)the orchards are alkaline or strongly alkaline.These soils distribute in the western,eastern and northern area of Guanzhong plain.87.6%of the orchards are short of organic matter in Guanzhong area which includes Chencang district of Baoji city,Xianyang city and most areas of Xi an city and Weinan city.Soils of the cherry orchards in the eastern part of Guanzhong area have abundant of total N,butsoils of the orchards in the western part of Guanzhong area are deficient in soil total N.The content of soil Olsen-P and available K in most of the cherry orchards in Guanzhong area are moderate or abundant.Only about 9.6%of the cherry orchards have low content of Olsen-P.We suggest that more organic fertilizers should be input in the cherry orchards in Guanzhong plain,and measures to decrease soil pH should be taken in this area;in the eastern part of Guanzhong plain,more nitrogen fertilizers should be applied,and more phosphorus fertilizers should be applied in the orchards in Chencang district of Baoji city and Xixiang county of Hanzhong city.
作者
李哲
胡旭
沈培
田汇
LI Zhe;HU Xu;SHEN Pei;TIAN Hui(College of Natural Resources and Environment,Northwest A&F University,Key Laboratory of Plant Nutrition and the Agri-environment in Northwest China,Ministry of Agriculture,Yangling Shaanxi 712100)
出处
《中国土壤与肥料》
CAS
CSCD
北大核心
2018年第5期134-140,共7页
Soil and Fertilizer Sciences in China
基金
横向课题(YTHC-YF-2017-018)。
关键词
陕西关中
樱桃
土壤肥力
地理空间分布
Shaanxi Guanzhong
sweet cherry
soil nutrient
geographic spatial distribution
作者简介
李哲(1994-),男,山西长治人,硕士,植物营养调控。E-mail:123165809@qq.com;通讯作者:田汇,E-mail:tianh@nwsuaf.edu.cn。
