华北农学报Issue(2)：199-203,5.
长期定位施肥对无石灰性潮土钾素演变的影响
Effect of Long-term Fertilization on Dynamics of Potassium in Non-calcareous Fluro-aquic Soil
摘要
Abstract
In order to investigate the variation of different fertilization on soil potassium,the effect of long-term fertilization of nitrogen ( N) organic manure( M) or manure with nitrogen (MN) on the amounts of total potassium and different forms of potassium in non-calcareous fluro-aquic soil was studied based on 36 years of long-term experiment. The results showed that the amounts of potassium decreased with long-term fertilization of high rate of nitrogen ( N2 ) fertiliz-er,compared to control treatment ( CK) the water soluble potassium,exchangeable potassium,available potassium,non-exchangeable potassium and total potassium were decreased for 0. 09 mg/kg,16. 34 mg/kg,3. 61 mg/kg,12. 3 mg/kg,2. 1 g/kg,respectively. Compared to control treatment (CK),the increase in water soluble potassium was 1. 28 mg/kg and ex-changeable potassium was 27.22 mg/kg for high rate of organic manure (M2) with low and high rate of nitrogen (N1or N2). However,the available potassium,non-exchangeable potassium and total potassium trended to increase with continue fertilization. The available potassium was correlated to soil organic matter ( SOM ) and cation exchange capacity ( CEC) . It suggests that the M or MN fertilizer is good for increasing different forms of potassium and total potassium in non-calcareous fluro-aquic soil,but not the fertilization of single N fertilizer.关键词
长期定位施肥/无石灰性潮土/钾素演变/钾素形态Key words
Long term fertilization/Non-calcareous fluro-aquic soil/Potassium dynamics/Potassium form分类
农业科技引用本文复制引用
温立玉,宋祥云,刘树堂,王飞,宋增强..长期定位施肥对无石灰性潮土钾素演变的影响[J].华北农学报,2014,(2):199-203,5.基金项目
国家自然科学基金项目(30873470) （30873470）
公益性行业(农业)科研专项(201203030) （农业）
山东省现代农业产业技术体系( SDAIT-01-022-06) （ SDAIT-01-022-06）
山东泰山学者岗位(旱作作物与育种学) （旱作作物与育种学）
