TANG Guangbin,LUO Yingluo,HUANG Xiumei,et al.Analysis of Soil Nutrients at Different Soil Fertility Levels in Black Soil Dryland Farmland in the West Foot of theGreater Khingan Mountains[J].HEILONGJIANG AGRICULTURAL SCIENCES,2023,(03):29-33.[doi:10.11942/j.issn1002-2767.2023.03.0029]
大兴安岭西麓黑土旱作农田不同地力水平土壤养分分析
- Title:
- Analysis of Soil Nutrients at Different Soil Fertility Levels in Black Soil Dryland Farmland in the West Foot of theGreater Khingan Mountains
- 文章编号:
- 6
- Keywords:
- black soil region in high latitude and cold regions; farmland productivity; organic matter; total nitrogen; trace element
- 文献标志码:
- A
- 摘要:
- 为保护和培育黑土，通过田间随机取样和室内养分分析，调查大兴安岭西麓谢尔塔拉农牧场不同地力等级土壤肥力状况及养分差异。结果表明，有机质、有效磷和缓效钾含量与地力等级相关性较好，随着地力等级的升高，含量呈升高趋势；其中有机质含量变化最大，一等地平均含量为62.93 g·kg-1，五等地为36.71 g·kg-1，一等地是五等地的1.71倍，一至四等地有机质含量均属于国家土壤普查土壤养分分级标准很丰富的水平，五等地属于丰富的水平；有效磷和缓效钾一等地分别是五等地的1.36倍和1.31倍。pH、全氮、碱解氮、速效钾也随着地力等级的升高呈升高趋势，全磷和全钾未呈现规律性变化，不同等级地力间均未形成显著性差异。不同地力等级平均有效铜、有效硼、有效锌含量适中，有效锰、有效钼含量丰富，有效铁含量极丰富。
- Abstract:
- In order to protect and cultivate the black soil， the soil fertility status and nutrient differences of different fertility grades in Sertara Farmland at the western foot of the Great Khingan Mountains were investigated through field random sampling and indoor nutrient analysis.The results showed that the contents of organic matter， available phosphorus and slow-acting potassium had a good correlation with the soil fertility grade. With the increase of soil fertility grade， the content showed an upward trend;The organic matter content showed obvious changes，the average content of the first grade was 62.93 g·kg-1， the fifth grade was 36.71 g·kg-1， and the first grade was 1.71 times of the fifth grade;The content of organic matter in the first to fourth grade of land belongs to the very rich level of soil nutrient grading standard of the national soil survey， and the fifth grade land belongd to the rich level.The available phosphorus and slow-acting potassium in the first grade were 1.36 times and 1.31 times of those in the fifth grade. pH， total nitrogen， alkali-hydrolyzable nitrogen， and available potassium also increased with the increase of soil fertility grade. Total phosphorus and total potassium did not change regularly， and there were no significant difference between different soil fertility grades.The average content of available copper， available boron and available zinc in different soil fertility grades was medium， the average content of available manganese and available molybdenum was rich， and the content of available iron was extremely rich.
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备注/Memo
收稿日期：2022-12-13