[1]张钟先.磷素在土壤中的扩散规律[J].水土保持研究,1987,(02):27-34.
Zhang Zhongxian.The Diffusion Movement of Phosphate in Soils[J].Research of Soil and Water Conservation,1987,(02):27-34.
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Zhang Zhongxian.The Diffusion Movement of Phosphate in Soils[J].Research of Soil and Water Conservation,1987,(02):27-34.
磷素在土壤中的扩散规律
《水土保持研究》[ISSN:1005-3409/CN:61-1272/P]
卷:
期数:
1987年02期
页码:
27-34
栏目:
出版日期:
1900-01-01
- Title:
- The Diffusion Movement of Phosphate in Soils
- 摘要:
- 本文应用放射性同位素示踪法，研究了黄土区几种土壤中磷素的扩散过程、影响因素以及其对作物有效性的关系。结果表明：1.磷素在土壤中一般仅能扩散3—4cm。10—15天乃基本达到平衡。各种类型土壤的磷素扩散有明显的差别，这与土壤的粘粒含量有关。磷素的扩散系数为7×10-8-6×10-7cm2/s；2.土壤水分和厩肥均能明显地增进磷素在土壤中的扩散作用，而无机盐的作用则相反；3.小麦和玉米幼苗从黄绵土中吸收的示踪磷比从红油土中吸
- Abstract:
- The diffusion of phosphate in some soils,affecting; factors and in relation to availability to plants were studied by the radio-isotopetracer, The phosphate in soils only diffused generally 3-4 cm from source. After 10-15 days,diffusion basically reached equilibrium. There were considerable differences in diffusion of phosphate in the soils of different type,that related to clay content of soil. Diffusive coefficients of phosphate (Dp) were 7×10-8-6×10-7cm2/s. Soil water and manure already obviously enhanced diffusion of phosphorus in soils. However,effect of the mineral salts was contrary, Trace phosphorus asorbed by the wheat and corn seedling were 1.5: time highef from Huanmian soil than from Hoagyou soil.
更新日期/Last Update:
1900-01-01