【摘要】 采用土培和水培试验研究了络合稀土对尿素和硫铵的转化以及对蔬菜、小麦的产量和对矿质养分的吸收与积累的影响。结果表明 ,络合稀土的处理可以减缓尿素水解 ,抑制铵态氮的硝化作用 ;施用络合稀土能显著提高白菜和菠菜及小麦产量 ,降低白菜和菠菜体内硝酸根含量 ,增加小麦的氮、磷、钾吸收量更多还原

【Abstract】 Experiments of both soil culture and water culture were conducted to study the effects of complex compounds of rare earth elements(CCREE)on the transformation of urea and ammonium sulfate added and on the yields of vegetables and wheat grains as well as nitrate accumulation in vegetables.Results showed that CCREE could significantly inhibit urea hydrolysis and nitrification of ammonium.The application of CCREE increased the yields of pakchoi and spinach but decreased the nitrate content in the vegetables.The contents of N,P and K and the yields of wheat were significantiy increased.更多还原