磷肥品种与土壤磷素活化系数对栗钙土磷素淋溶的影响

秦永林; 田艳花; 陈杨; 贾立国; 于静; 樊明寿

引用本文:	秦永林,田艳花,陈杨,等.磷肥品种与土壤磷素活化系数对栗钙土磷素淋溶的影响[J].灌溉排水学报,0,():-.
	QIN Yonglin,TIAN Yanhua,CHEN Yang,et al.磷肥品种与土壤磷素活化系数对栗钙土磷素淋溶的影响[J].灌溉排水学报,0,():-.

【打印本页】【下载PDF全文】【查看/发表评论】【EndNote】【RefMan】【BibTex】

过刊浏览高级检索

本文已被：浏览 1718次下载 0次
分享到：微信更多字体:加大+\|默认\|缩小-
磷肥品种与土壤磷素活化系数对栗钙土磷素淋溶的影响
秦永林¹, 田艳花¹, 陈杨², 贾立国¹, 于静¹, 樊明寿¹
1.内蒙古农业大学农学院呼和浩特;2.内蒙古农业大学草原与资源环境学院呼和浩特

摘要:

【目的】探究磷肥品种与土壤磷素活化系数（PAC）对栗钙土磷素淋溶影响的特点。【方法】采集栗钙土农田两种PAC差异较大的土壤，采用土柱模拟的试验方法，研究了施用P2O5 160 kg?hm-2的过磷酸钙（MCP）、磷酸一铵（MAP）、磷酸二铵（DAP）对土壤渗漏液总磷（TP）、可溶性磷（TDP）动态变化以及淋失量的影响。【结果】结果1.栗钙土中存在超过40cm土层的磷肥淋溶损失，PAC为7.72%土壤淋溶液的初始TP浓度是PAC为0.86%土壤的1.91倍；结果2.TDP是栗钙土磷淋溶的主要形式，占TP的68.8%～82.9%；结果3.PAC较高的土壤施用磷肥显著增加磷素淋溶损失，且显著高于PAC较低的土壤；结果4.PAC较高的土壤中DAP的磷肥淋溶损失显著高于MAP和MCP，各磷肥淋溶量不足施磷量的2%。【结论】与MCP和MAP相比，DAP在栗钙土中的磷素淋溶损失最大，较高PAC的土壤施用磷肥存在较高的磷淋溶风险。

关键词: 磷肥；淋溶损失；栗钙土；土壤磷素活化系数

DOI：

分类号:S274；S275

基金项目:国家重点研发计划项目(2017YFD0200200、2018YFD0200801); 内蒙古自治区高等学校青年科技英才支持计划(NJYT-20-B16); 内蒙古自然科学基金项目(2019MS03048)

Effect of Phosphorous Leaching with Different Phosphorus Fertilizers and Phosphorus Activation Coefficient in Chestnut Soil

QIN Yonglin¹, TIAN Yanhua¹, CHEN Yang², JIA Liguo¹, YU Jing¹, FAN Mingshou¹

1.College of Agronomy,Inner Mongolia Agricultural University;2.College of Grassland and Resource Environment,Inner Mongolia Agricultural University

Abstract:

【Objective】Explore the characteristics of phosphorous leaching with different phosphorous fertilizers and phosphorus activation coefficient in chestnut soil.【Method】With soil column simulation experiment, the effects of total phosphorus (TP) and total dissolved phosphorus (TDP) and leaching amount in leachates from the soil of 2 the phosphorus activation coefficient (PAC) were studied by applying three types of phosphate fertilizers including monocalcium phosphate(MCP, 160 kg P2O5?hm-2), monoammonium phosphate(MAP, 160 kg P2O5?hm-2) and diammonium phosphate (DAP, 160 kg P2O5?hm-2).【Result】(1)Soil layer of more than 40cm had phosphorous leaching loss in chestnut soil. The initial TP of 7.72% PAC was 1.91 times higher than 0.86% PAC. (2) In chestnut soil, TDP which is the main existing forms of TP in phosphorous leaching accounted for 68.8%～82.9% of TP. (3)Compared with the soil of lower PAC, phosphorous leaching loss were significantly increased by applying phosphate fertilizer in the soil of higher PAC. (4)Compared with the MCP and MAP, DAP significantly increased phosphorous leaching loss, which were less than 2% phosphate fertilizer.【Conclusion】Compared with the MCP and MAP, phosphorous leaching loss of DAP is the highest in chestnut soil. The soil of higher PAC has high risk of phosphorous leaching by applying phosphate fertilizers.

Key words: Phosphate Fertilizer, Leaching Loss, Chestnut Soil, Phosphorus Activation Coefficient