摘要
【目的】全面了解昆明滇池片区耕地土壤养分的时空变化。【方法】对昆明滇池片区7个县(区)所采集的3907个农田土壤样品进行化验检测,结合"3S"技术,研究分析昆明市农田土壤养分含量的空间分布和变化情况。【结果】昆明滇池片区耕地土壤中有效硼含量处于中等水平的面积占70.08%,处于缺乏状态的占28.29%,有效锌含量处于中等的占63.18%,其它养分大部分面积是处于较丰富和丰富水平。从养分平均值来看,昆明滇池片区全氮、碱解氮属较丰富水平,而有机质、有效磷、速效钾均达到丰富水平。微量元素除有效硼属缺乏状态外,其余有效锰、有效锌、有效钼含量平均值都处于高或较高水平。总体来说,菜地和季节性蔬菜用地,养分含量最高,种植果树的旱地最低。【结论】昆明滇池片区耕地土壤整体养分含量水平处于丰富和较丰富状态,与第二次土壤普查相比,土壤有机质、全氮、碱解氮、速效磷、速效钾的含量都在普遍上升。在施肥过程中,应结合耕地土壤质量提升技术,做到精准施肥,提高肥料利用率和土壤供肥能力。
[Objective] The aim of this paper is to fully understand the temporal and spatial variation of soil nutrient in the cultivated land in Kunming district.[ Method ] Based on the analysis of 3907 farmland soil samples collected from 7 counties in Dianchi district of Kunming city, combined with ‘3S' technology, the spatial distribution and change of soil nutrient content of farmland in Kunming city were studied.[Result] The results showed that the area with medium available boron content in the cultivated land in Dianchi district of Kunming city ac counted for 70.08 %, and the area with deficient available boron content accounted for 28.29 %. The area with medium available zinc con tent accounted for 63.18 %. Most areas of other nutrients were rich or more abundant. According to the average value of soil nutrient, the total nitrogen and alkali hydrolysable nitrogen in the Dianchi district of Kunming city reached a rich level, while the organic matter, available phosphorus and available potassium were rich. Except for available boron, the average contents of effective manganese, effective zinc and ef fective molybdenum of trace elements were in high or higher level. The nutrient contents of vegetable land and seasonal vegetable land were higher than that of the dry land of fruit trees.[ Conclusion ] The total nutrient content of arable soil in Dianchi district of Kunming city is rich. Compared with the second national soil survey data, the contents of soil organic matter, total nitrogen, alkali hydrolysable nitrogen, a- vailable phosphorus and available potassium are generally increasing. In the process of fertilization, it is necessary to combine the technology of improving the soil quality of cultivated land to achieve precise fertilization, and improve the utilization rate of fertilizer and the ability of soil fertilizer supply.
作者
谭海燕
童江云
包涛
钱玲
任建青
周文星
TAN Hai-yan;TONG Jiang-yun;BAO Tao;QIAN Ling;REN Jian-qing;ZHOU Wen-xing(Resources and Environment Research Institute, Kunming Academy of Agricultural Sciences, Yunnan Kunming 650118, China)
出处
《西南农业学报》
CSCD
北大核心
2019年第7期1614-1620,共7页
Southwest China Journal of Agricultural Sciences
基金
农业部测土配方施肥补贴资金项目
关键词
滇池片区
耕地
土壤养分
Dianchi district
Cultivated land
Soil nutrient
