首页 | 本学科首页   官方微博 | 高级检索  
     检索      

模拟降雨条件下施磷量对褐土无机磷含量及形态转化的影响
引用本文:李彦,高燕,张英鹏,孙明,陈清.模拟降雨条件下施磷量对褐土无机磷含量及形态转化的影响[J].华北农学报,2009,24(3).
作者姓名:李彦  高燕  张英鹏  孙明  陈清
作者单位:1. 山东省农业科学院土壤肥料研究所,山东济南,250100
2. 山东建筑大学商学院,山东济南,250101
3. 中国农业大学资源与环境学院,北京,100094
基金项目:"十一五"国家科技支撑计划项目,山东省自然科学基金项目 
摘    要:采用室内土柱模拟试验,研究在山东平均降雨条件下不同施磷量对褐土各组分无机磷含量及形态转化的影响.结果表明,经过模拟降雨后,在0~10 cm土层中,各施磷处理的无机磷总量随着施磷量的增加而升高;随着土层的加深(10~50 cm),各土层无机磷总量是施磷量为P2(180 kg/hm2)时最高.而在10-30 cm土层,是施磷量为P3(1440 ks/hm2)的土壤无机磷总量高于P1,而在30~50 cm则是P1高于P3.同时,不同施磷量对磷组分含量及其占无机磷总量的比例都发生了改变,当施磷量分别为P1、P2和P3时,各无机磷组分的含量及所占比例按高低排序分别为:Ca10-P>Al-P,O-P>Ca8-P>Fe-P>Ca2-P;O-P>Ca8-P,Ca10-P>Fe-P,AI-P>Ca2-P和Ca10-P,O-P>Fe-P,Ca8-P>Al-P>Ca2-P.随着土层深度的加深,O-P、Fe-P和Ca10-P的含量保持相对稳定,而有效态无机磷源(Ca2-P、Ca8-P和AI-P)有降低的趋势;在小雨强度下,不同施磷量处理的土壤磷淋失量差异不显著,而随着降雨强度的加大,P3处理的土壤磷淋失量明显高于PI和P2处理的磷淋失量.以上结果说明,施磷量显著影响无机磷总量、各组分无机磷含量及其转化;在大于中等降雨条件下,高磷处理磷淋失量明显高于低磷处理磷淋失量.

关 键 词:模拟降雨  无机磷含量  无机磷组分  施磷量  褐土

Effects of P Rates on Different Fraction Inorganic P Content and Its Transformation in Cinnamon Soil under Simulated Rainfall Conditions
LI Yan,GAO Yan,ZHANG Ying-peng,SUN Ming,CHEN Qing.Effects of P Rates on Different Fraction Inorganic P Content and Its Transformation in Cinnamon Soil under Simulated Rainfall Conditions[J].Acta Agriculturae Boreali-Sinica,2009,24(3).
Authors:LI Yan  GAO Yan  ZHANG Ying-peng  SUN Ming  CHEN Qing
Institution:1.Institute of Soil and Fertilizer;Shandong Academy of Agriculture Sciences;Jinan 250100;China;2.Business School;Shandong Jianzhu University;Jinan 250101;3.College of Resource and Environmental Sciences;China Agricultural University;Beijing 100094;China
Abstract:Simulated soil column was used to study the effects of different P rates on inorganic P content and its transformation in cinnamon soil under average rainfall of Shandong Province.Results showed that total inorganic phosphorus contents of treatments applied with P increased in 0-10 cm soil layers when P application rates were increased after simulated rainfall;With plough layers were deepened(from 10 cm to 50 cm),the total inorganic P contents in different layers of P2(180 kg/ha)were the highest.In 10-30 cm...
Keywords:Simulated rainfall  Inorganic P content  Inorganic P fractionation  P rates  Cinnamon soil  
本文献已被 CNKI 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号