1·Sand also provides a firmer, less muddy surface underfoot, while aiding growth, as long as proper aeration and topdressing are part of your maintenance plan.
沙还提供了一个坚实，不泥泞的地表脚下，而协助的增长，只要适当的曝气和追肥是你的维护计划的一部分。
2·The result indicated that, under the base fertilizer and the topdressing same condition, the variety grain yield and quality difference was remarkable.
结果表明，在底肥和追肥相同的条件下，品种间产量和品质差异显著。
3·Cuttings topdressing can be carried out with water, can also be used phosphate: potassium hydrogen plus a foliar application of urea.
扦插苗追肥可结合浇水进行，也可用磷酸：氢钾加尿素进行叶面喷施。
4·Field experiments were conducted to study cotton nitrogen diagnosis and topdressing recommendation by measuring cotton tissue NO 3 - concentration with Reflectoquant .
应用反射仪测定棉株叶组织硝态氮含量，研究了硝态氮作为棉花氮营养诊断和追肥推荐指标的可行性。