保水剂施用层次对草坪生长及土壤水肥的影响 |
李佳岭 |
The effect of different super absorbent polymer applying layer on turf growth and soil water and fertility |
图4 实验起始-结束阶段土壤全N、有效N、速效P、速效K含量变化 Fig.4 The change of total nitrogen rate, available nitrogen content, available phosphorus content, available potassium content at the start and end time of the experiment |