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为探明分层施磷对冬小麦生长发育和产量的影响,在大田采用PVC管栽培法,设置不施肥、0~20 cm单施氮肥、0~20 cm单施磷肥、0~20 cm施氮磷肥、分层施磷(1~20 cm,20~40 cm,40~50 cm)、40~50 cm深层施磷6个处理,比较了分层施磷的效应。结果表明,分层施磷明显促进了冬小麦生长发育,提高了地上部和根系干重,增加了下层根比例;与深层施磷、表层施磷和单施磷肥相比,分层施磷处理产量分别增加7.46%、16.16%和75.81%,磷素农学利用分别提高156.20%、43.71%和297.11%。分层施磷可提高冬小麦产量,提高磷肥利用效率。
In order to find out the effect of layering phosphorus application on the growth and yield of winter wheat, PVC pipe was used to cultivate the field without any fertilizers. Nitrogen fertilizer 0 to 20 cm, phosphate fertilizer 0 to 20 cm, nitrogen 0 to 20 cm Phosphorus fertilizer was applied to 6 treatments of phosphorus application (1 ~ 20 cm, 20 ~ 40 cm, 40 ~ 50 cm) and phosphorus depth of 40 ~ 50 cm in different layers. The results showed that stratified application of phosphorus significantly promoted the growth and development of winter wheat, increased the dry weight of shoots and roots, and increased the proportion of lower roots. Compared with the deep application of phosphorus, surface application of phosphorus and single application of phosphate, stratification of phosphorus production Increased by 7.46%, 16.16% and 75.81% respectively, and the utilization of phosphorus agronomic increased by 156.20%, 43.71% and 297.11% respectively. Hierarchical phosphorus application can increase the yield of winter wheat and increase the efficiency of phosphate fertilizer use.