论文部分内容阅读
利用盆栽试验研究了潮土中不同形态氮肥对磷肥生物有效性的影响。结果表明:不同形态氮肥处理均有抑制油菜生长初期磷素累积的作用,氯化铵处理抑制作用最突出,其次是尿素,再次是硫酸铵、硝酸铵和硝酸钙处理;油菜生长后期不同形态氮肥处理均逐渐显著促进油菜的磷累积,但氯化铵处理的促进作用仍然低于其它氮肥处理,这与不同形态氮肥处理对油菜生长的影响较一致。土壤有效磷含量受不同形态氮肥处理影响较小,而水溶性磷含量因施用不同形态氮肥均表现显著地下降,氯化铵和硫酸铵处理使土壤水溶性磷下降较多,硝酸铵、硝酸钙和尿素处理使土壤水溶性磷下降较少。
Pot experiments were conducted to study the effects of different forms of nitrogen fertilizer on the bioavailability of phosphate fertilizer in alluvial soil. The results showed that different forms of nitrogenous fertilizer could inhibit the accumulation of phosphorus in the initial stage of rapeseed growth. The ammonium chloride treatment had the most prominent inhibitory effect, followed by urea, followed by ammonium sulfate, ammonium nitrate and calcium nitrate treatment. The different forms of nitrogenous fertilizer However, the promotion effect of ammonium chloride treatment is still lower than other nitrogen treatments, which is consistent with the effect of different forms of nitrogen fertilizer on the growth of rape. Soil available phosphorous content was less affected by different forms of nitrogen fertilizer treatment, while water soluble phosphorus content decreased significantly due to the application of different forms of nitrogenous fertilizer. Ammonium chloride and ammonium sulfate decreased soil water-soluble phosphorus, while ammonium nitrate and calcium nitrate Urea treatment reduced soil water-soluble phosphorus less.