黄绵土在连续施肥下的肥料效应

The effect of successive fertilization on the yellow loamy soil

本文以1983～1989年在黄绵土上所做田间试验结果和室内分析资料为依据,详细讨论了施用不同肥料(氮、磷、氮磷、有机肥、有机肥+磷、有机肥+氮,有机肥+氮磷),对玉米、谷子、糜子、荞麦等作物的产量及其经济效益;植株对肥料的利用率;土壤养分含量的变化;肥料种类与籽粒品质等的影响。指出,在这一水土流失严重地区,应十分重视增施有机肥,切忌化肥单施,实行氮磷肥配合施用;磷肥效果明显高于氮肥,建议解决磷肥供应不足问题。在目前有机肥,化肥均感不足情况下,应优先提供玉米对肥料的需要,其次为谷子。

Based on the experimental results in the yellow loamy soil and the analysing data obtained in the laboratory from 1983 to 1989 year, the paper detailes the discussion about the effects of different fertilizer, such as the fertilizers of nitrogen, phosphourus, nitrogen mixed with phospourous, organic fertilizer and mixed with phosphorus or mixed with nitrogen, organic fertilizer mixed with nitrogen and phosphorus, on the yields and economical benefits of corn, millets, broom corn millet and buckwheat, etc., on the use rate of feritlizer by plants, on the variation of soil nutrition contents, and on the seed quality with different kind of fertilizer, indicating that, in the region with serious soil and water loss,much attention must be paid to applying more organic fertilizer, avoiding by all means applying single chemical fertilizer, conducting the mixing of applying nitrogen and phosphorus fertilizer, and that the effect from phosphorus is much higher than that of the nitrogen fertilizer.It is raised to solve the problem of shortage in the providing of phosphorus fertilizer Under the current conditions being short of organic and chemical fertilizer, the corn should takes precedence to be provided with fertilizer,then the millit.