| 摘要: |
| 白浆土施用磷肥,作物增产效果比较明显。但在黑龙江三江平原地区应用较普遍的轮作中,小麦、玉米、大豆是否每年都要等量施用磷肥,以及作物根系能够达到的黑土层和白浆层中,磷的水平如何,施磷后效能维持几年等问题,均需加以解决。以期做到经济合理地施用磷肥,既能不断提高产量,又可维持地力,进一步发挥肥料的经济效益。 |
| 关键词: 大豆 盆栽试验 土层 白浆土 白浆层 效果比较 春小麦生长 剂型 磷肥后效 |
| DOI： |
|
| 基金项目: |
|
|
|
|
|
| Abstract: |
| From the experiment of applying P fertilizer to albic planosol,the following results have been obtained: 1.The available P content of Aw(albic)horizon is only 5 ppm, thus the spring wheat would have no harvest if no P fertilizer is ap- plied.The residual effect of P fertilizer is very low,so if P fertilizer is not replenished,there would be hardly harvest in the succeeding year. 2.The production of soybean grown on Aw horizon applied with P fertilizer ismuch higher than that grown on the some horizon withou... |
| Key words: |
