Factors affecting potassium leaching in different soils
作者： M.A. Alfaro , S.C. Jarvis , P.J. Gregory
DOI: 10.1111/J.1475-2743.2004.TB00355.X
关键词:
摘要: A set of lysimeter based experiments was carried out during 2000/01 to evaluate the impact soil type and grassland management on potassium (K) leaching. The effects (1) four textures (sand, loam, loam over chalk clay), (2) grazing cutting (with farmyard manure application), (3) K applied as inorganic fertilizer, dairy slurry or a mixture both sources were tested. Total losses in clay more than twice those sand (13 6 kg ha(-1), respectively) because development preferential flow soil. They also greater cut treatment grazed (82 51 respectively; P less equal to0.01), associated with 63% increase concentration leachates from former (6.7 +/- 0.28 4.1 0.22 mg L-1 for grazed, to0.01) input manure. source fertilizer did not affect total average (P >0.05), but it changed pattern these time.
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