藤县水田耕地质量监测点地力调查分析

2021-08-20 01:39:35文全许开达谢燕
广西农学报 2021年5期

文全 许开达 谢燕

摘要:【目的】为合理利用耕地资源、促进耕地质量保护与提升提供参考。【方法】利用20l6一20l9年藤县水田耕地质量监测点数据,分析土壤主要养分现状、变化趋势和养分之间的相关性。【结果】耕地质量保护与提升工作开展以来,藤县水田耕地土壤主要养分总体呈缓慢上升趋势,趋向良好状态。经sPss的Pearson分析,监测的耕地土壤主要养分中,pH值与有机质、全氮、有效磷、速效钾的含量无显著相关,而有机质与全氮则极显著相关。【结论】藤县水田耕地肥力总体状态良好,耕层土壤有机质丰富,全氮含量水平高,速效钾含量水平在中等以上,有效磷含量差异极大,且同一监测点有效磷和速效钾的含量年间波动变化较大,监测点耕层土壤质量有待提高。

关键词;藤县﹔土壤﹔监测

中图分类号;sl59文献标识号;A文章编号;l003-4374(202l)05-0069-07

Investigation and Analysis on soil Fertility of CultivateI Land 0uality Monitoring Points in Teng County

wen 0uan, xu kai-da, xie Yan

(Teng County soil Fertilizer workstation,wuzhou,Guangxi 543300,China)

Abstract:   【0bjective】To provide reference for rational utilization of cultivated land resources and promotion  of  cultivated  land  quality  protection  and  improuement.【Method】  Based  on  the  data  of cultivated land quality monitoring points in Teng County from 20l6 to 20l9,the present situation,variation trend and correlation of soil main nutrients were analyzed.   【Result】since the implementation of cultivated land quality protection and improvement,the main nutrients of paddy soil in Teng County have generally shown a slow upward trend and tended to be in good condition. Pearson analysis of sPss showed that there was no significant correlation between PH value and the contents of organic matter,total  nitrogen, available  phosphorus  and  available  potassium  in  the  monitored  main  nutrients  of cultivated  land, while  organic  matter  and  total  nitrogen  were  extremely  significantly  correlated. 【Conclusion】The overall fertility of cultivated land in Teng County was in good condition. The soil organic matter in the plough layer was rich,the total nitrogen content was high,and the available potassium  content  was  above  the  medium  level.  The  content  of  available  phosphorus  was  greatly different. The content of available phosphorus and available potassium in the same monitoring point fluctuated greatly between years,and the soil quality of the plough layer in the monitoring point needed     to be improved.

Keywords: Teng County,soil cultivated land,land force,monitoring

耕地是農业生产的基础,耕地质量直接影响到农业生产产出。"粮足安天下,良田好产粮。"为确保粮食安全,加强耕地质量管理显得尤为迫切和重要[1]。耕地质量监测为耕地质量管理的一项重要措施。本文以藤县2016一2019年耕地质量监测数据为依据,统计分析藤县水田耕地质量及变化状况,为合理利用耕地资源、为保护与提升耕地质量提供参考。 1研究方法

1.1监测点地块情况

藤县耕地面积3.16万公顷,水稻栽培面积1.65万公顷,水田种植制度以稻-稻轮作为主。年均降雨量1472mm,年均日照时数1742小时,年均气温21℃,属亚热带湿润季风气候。藤县有7个县级水稻种植监测点,各点所在的土壤类型不同。……

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