摘要： 用温室盆栽耗竭试验方法和室内模拟田间条件，对河南5类8种土壤供钾能力和固钾特性进行了研究。结果表明，砂姜黑土土壤钾素耗竭程度严重，表现是植株吸钾总量和首茬作物吸钾量最低。砂姜黑土、红粘土和粘质潮土对外源供给钾素的固钾率明显高于其他土类。褐土与黄褐土的固钾能力相似，砂质潮土最低。
关键词:
供钾能力,
固钾特性,
土类,
河南省
Abstract: Potassium(K)supplying power and K fixation characteristics of 8 representative plow layer soils were studied by laboratory analysis, pot culture experiment and K fixation trials.The results showed that:(1)K supplying power of Shajiang black soil was the lowest among 3 soils based on the lowest total net amount of K uptake.(2)K fixation power by soil was negatively correlated with total net amount of K uptake.There was the high amount of K fixation in Shajiang black soil, Hongnian soil, and clayed fluvo-aquic soil, and low in sandy fluvo-aquic soil.
Key words:
Potassium,
Fixation,
K supplying power,
Soil,
Henan province
孙克刚, 李贵宝, 刘纯敏, 杨占平, 黄绍文, 金继运. 河南省主要土类供钾能力与固钾特性[J]. 华北农学报, 1999, 14(1): 123-128. doi: 10.3321/j.issn:1000-7091.1999.01.025.
Sun Kegang, Li Guibao, Liu Chunmin, Yang Zhanping. Potassium Supplying Power and Potassium Fixation Characteristics of Selected Soils from Henan Province[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1999, 14(1): 123-128. doi: 10.3321/j.issn:1000-7091.1999.01.025.