摘要： 砂姜黑土是黄淮海平原的主要低产土壤之一。在该地区磷肥（P2O5）的适宜用量为每亩4-5公斤，氮磷比值为1:2。小麦氮、磷肥配合的经济最佳施用量N为6.88公斤/亩，P2O5为4.25公斤/亩。磷肥在砂姜黑土中的固定强度不大。磷肥的有效施用方法为全部撒施掩底或大部分掩底和少量用作种肥。
关键词:
砂姜黑土,
磷肥效应,
优化施用技术,
固定强度
Abstract: The Sand Concretion Black Soil is one of the main low yield soils in the plain among Yellow-river,Huai-river and Hai-river.In this area,for wheat,the proper rate of P2O5 was 4-5 kg/mu,N:P2O5=1-2:1.The best applying rate of N and P2O5 was N=6.88 kg/mu,P2O5=4.25kg/mu.The immobile intensity of P2O5 was not serious in soil.The effective applying method of phosphoric fertilizer was all spreading and plowing into the soil or plowing most of it and using some of it as seed fertilizer.
Key words:
Sand concretion black soil,
Phosphoric effect,
The best applying technique,
Immobile intensity
何静安. 论砂姜黑土的磷肥效应与优化施用技术[J]. 华北农学报, 1988, 3(1): 56-61. doi: 10.3321/j.issn:1000-7091.1988.01.010.
He Jing'an. STUDY ON THE EFFECT AND BEST APPLYING TECHNIQUE OF PHOSPHORIC FERTILIZER IN THE SAND CONCRETION BLACK SOIL[J]. ACTA AGRICULTURAE BOREALI-SINICA, 1988, 3(1): 56-61. doi: 10.3321/j.issn:1000-7091.1988.01.010.