基于GIS的长江中游油菜种植区土壤养分及pH状况

发布时间：2018-03-04 09:16

本文选题：油菜　切入点：GIS　出处：《土壤学报》2016年05期 　论文类型：期刊论文

【摘要】：为了掌握长江中游油菜种植区土壤养分状况,在湖北、湖南、江西三个省份调查和取样分析5 463份土壤数据的6个指标(土壤有机质、全氮、有效磷、速效钾、有效硼和pH),基于Arc GIS平台,采用Kriging插值法分析4个不同油菜种植区域(二熟制山地区、二熟制平原区、三熟制山地区、三熟制平原区)的土壤养分状况。结果表明,长江中游油菜种植区土壤有机质、全氮和有效磷均处于适宜/丰富的含量水平,基本没有5级和6级水平的有机质、全氮、有效磷分布。从不同区域来看,以上3个养分指标总体均表现为三熟制地区养分含量高于二熟制地区。长江中游仍有1.82×10~5 hm~2区域土壤速效钾处于缺乏的水平(30~50 mg kg~(-1))。土壤有效硼含量仍有待提高,尤其是在三熟制地区,土壤有效硼缺乏(5级和6级)的比例仍高达13.6%~20.4%。土壤pH多集中在6.0左右,但是三熟制地区仍然有较高比例(约35.7%)的土壤pH处于4.5~5.5。综上所述,长江中游不同种植区域土壤养分性状存在差异,尤其是三熟制地区仍有相当比例需要提高土壤有效硼和改良酸性土壤。
[Abstract]:In order to grasp the middle reaches of the Yangtze River rapeseed planting area soil nutrient status in Hubei, Hunan, Jiangxi three provinces 6 index investigation and sampling analysis of 5463 samples of soil data (soil organic matter, total nitrogen, available phosphorus, available potassium, available boron, Arc and pH) based on GIS platform, using Kriging interpolation method for the analysis of 4 different the rape planting area (two cropping system in mountain area, two cooked plain, three cooked cooked three mountain area, plain area) the soil nutrient status. The results showed that rape planting area in the middle reaches of the Yangtze River Soil organic matter, total nitrogen and phosphorus were in the appropriate / rich content, organic matter, no 5 and 6 levels of nitrogen, phosphorus distribution. From different regions, more than 3 overall nutrient index showed three cropping area nutrient content is higher than the two cropping region in the middle reaches of Yangtze River. There are still 1.82 x 10~5 hm~2 soil available potassium in the lack of level (30~ 50 mg kg~ (-1)). The effective boron content in soil is still to be improved, especially in the three cropping area, soil available boron deficiency (5 and 6) of the proportion is still as high as 13.6%~20.4%. soil pH concentrated in about 6, but the three cropping areas still have a higher proportion (about 35.7%) of the soil pH in 4.5~5.5. in summary, there are differences in the middle reaches of Yangtze River in different planting soil nutrient characters, especially the three cropping region still need to improve soil available boron and modified acidic soil for a considerable proportion.

【作者单位】：华中农业大学资源与环境学院农业部长江中下游耕地保育重点实验室;农业部全国农业技术推广服务中心;
【基金】：农业部耕地质量保护专项(2013135) 国家油菜产业技术体系建设专项(CARS-13) 中央高校基本科研业务费专项(2662015PY135)资助~~
【分类号】：S158;S153

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