| 12年连续施用秸秆和钾肥对土壤钾素含量和分布的影响 |
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| 引用本文： | 邢素丽,刘孟朝,韩保文.12年连续施用秸秆和钾肥对土壤钾素含量和分布的影响[J].土壤通报,2007,38(3):486-490. |
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| 作者姓名： | 邢素丽 刘孟朝 韩保文 |
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| 作者单位： | 河北省农林科学院,农业资源环境研究所,河北,石家庄,050051 |
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| 基金项目： | 国家科技支撑计划;加拿大国际植物营养研究所(IPNI)项目 |
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| 摘 要： | 为探索潮土钾素肥力培肥的有效途径,本文通过设计不同施钾处理进行田间定位试验。结果表明,不同的处理对土壤速效钾、缓效钾含量的影响在不同的土层深度表现不同。连续12年施入秸秆、钾肥、秸秆加钾肥(年施K2O≥150kg hm-2)对培肥耕层土壤速效钾和缓效钾有积极促进作用,均能显著或极显著提高耕层土壤速效钾和缓效钾含量,但对耕层以下土壤培肥作用不明显。
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| 关 键 词： | 小麦-玉米轮作 潮土 速效钾 缓效钾 含量和分布 |
| 文章编号： | 0564-3945(2007)03-0486-05 |
| 修稿时间： | 2006年5月9日 |
Effects of 12 -Year Continuous Application of Straw and K Fertilizer on Soil Potassium Concentration and Distribution in Fluvo- Aquic Soil |
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| XING Su-li,LIU Meng-chao,HAN Bao-wen.Effects of 12 -Year Continuous Application of Straw and K Fertilizer on Soil Potassium Concentration and Distribution in Fluvo- Aquic Soil[J].Chinese Journal of Soil Science,2007,38(3):486-490. |
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| Authors: | XING Su-li LIU Meng-chao HAN Bao-wen |
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| Abstract: | To study the available ways of increasing soil fertility in Fluvo-Aquic Soil,we setup field experiments by designing four different treatments,while were based on equal annual nitrogen(N) and phosphorous(P),but different fertilizer rates,wheat straw(M,1kg m-2),K fertilizer(K2O150kg hm-2) and MK(wheat straw 1kg m-2 and K2O 150kg hm2).Result shows that the effect of different treatments on soil fast available K and soil slow available K was different in 0-20cm and 20-40cm of soil depth.The continuous application of M,K and M K could increase the concentration of soil fast available K and slow available K in 0-20cm soil depth,but there was no clear effect on those in 20-40cm soil depth. |
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| Keywords: | Wheat-corn rotation Fluvo-Aquic Soil Soil fast available K Soil slowly available K Concentration and distribution |
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