土层置换与培肥对石灰性黑钙土土壤养分的影响
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S15

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黑龙江八一农垦大学学成引进人才科研启动计划(XDB201819)


Effect of Soil Layer Displacement and Directional Fertilization on Nutrient Content of Lime-Based Black Calcium Soil
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    摘要:

    土壤对作物的生长起着决定性的作用,土层置换与定向培肥是改善土壤养分的关键技术,为研究土层置换与培肥对石灰性黑钙土土壤养分的影响,本研究以黑龙江某区块(石灰性黑钙土)为研究对象,将0~20 cm土壤与20~40 cm土壤进行一年土层置换后连续三年定向培肥处理,探讨土层置换对石灰性黑钙土养分含量及有效性的影响;以土层不置换为对照(CK),进一步对石灰性黑钙土进行土层置换(T1)、土层置换+秸秆(T2)、土层置换+500 kg/667 m2烘干鸡粪(T3)、土层置换+40%理论磷肥施用量(T4)等四种方法作为试验组,研究不同施肥情况对土层置换的定向培育有效性的影响。研究结果表明:只进行土层置换后,石灰性黑钙土的速效氮磷钾和总有机碳含量降低;在土层置换的基础上,分别以秸秆、烘干鸡粪和磷为肥料,增加对石灰性黑钙土的施肥,此后土壤有机碳和速效氮磷钾含量显著提高,从而平衡了石灰性黑钙土的酸碱度;在土壤进行土层置换和定向培育的对比中发现,以土层置换+500 kg/667 m2烘干鸡粪的方式培育出的效果最佳,其石灰性土壤的速效氮磷钾和总有机碳含量增速最大。应用土层置换和定向培肥技术,能显著改善石灰性黑钙土的养分含量,提高养分的有效性,为作物生长提供良好的土壤环境。

    Abstract:

    In the cultivation,the essential material is soil,which plays a decisive role in the growth of the whole crop.Soil replacement and directional fertilization are the key technologies to improve soil nutrients.In order to study the influence of soil replacement and fertilization on soil nutrients of calcareous chernozem,this paper takes a certain block of Heilongjiang Province (calcareous chernozem) as the research object,and takes 0-20 cm soil and20-40 cm soil as the research object.After one year of soil replacement,three consecutive years of directional fertilization treatment was carried out to explore the effect of soil replacement on nutrient content and effectiveness of calcareous chernozem;with no soil replacement as control (CK),further soil replacement (T1),soil replacement+straw(T2),soil replacement+500 kg dried chicken manure (T3),soil replacement 40%theoretical phosphorus fertilizer application amount (T4) were carried out for calcareous chernozem.In order to study the effects of different fertilization conditions on the effectiveness of directional cultivation of soil layer replacement,four methods were used as experimental groups.The results show that the content of available N,P,K and TOC in calcareous chernozem will decrease after soil layer replacement only.In the comparison of soil layer replacement and directional cultivation,it was found that the effect of soil layer replacement+500 kg/667 m2 drying chicken manure was the best,and the content of available nitrogen,phosphorus,potassium and total organic carbon in calcareous soil increased the most.The application of soil replacement and directional fertilization technology can significantly improve the nutrient content of calcareous chernozem,improve the effectiveness of nutrients,and provide a good soil environment for crop growth.

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李响,辛刚.土层置换与培肥对石灰性黑钙土土壤养分的影响[J].东北农业科学,2023,48(2):68-71,85.

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  • 收稿日期:2020-02-21
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  • 在线发布日期: 2024-10-24
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