---

作 者 ：闫双堆,卜玉山,刘利军.

期 刊 ：中国生态农业学报 2008年 16卷 5期 页码：1104-1108

关键词：早熟禾草坪草；污泥复混肥；酶活性；分蘖量；剪草；

Keywords:Poa annua Linn., Sewage sludge fertilizer, Enzyme activity, Grass tillering, Grass cutting,

摘 要 ：为使城市生活污泥得以无害化、资源化综合利用，通过盆栽试验，研究了经无害化处理的生活污泥辅以化肥配制的污泥复混肥对早熟禾草坪草生长以及土壤酶活性的影响。结果表明：在氮、磷、钾施用总量相同的条件下，随复混肥中污泥含量的增加，草坪土壤脲酶、蛋白酶、转化酶活性显著提高，草坪草的颜色明显改善，剪草量、分蘖数显著增加，特别在生长中后期草坪颜色提高两个等级, 剪草量鲜重增加10～15 g·盆^-1, 分蘖数增加30～50个·盆^-1, 细胞膜透性降低40%。但污泥提供氮素养分占总氮量的60％以上时，其肥料效应的增加不再显著，故在配制污泥复混肥时，以污泥提供氮素养分占总氮量的60％左右为宜。

Abstract:To enhance the utilization of detoxified city sewage sludge, the effect of sewage sludge compound fertilizer on the growth of Poa annua Linn. and activity of soil enzyme were studied in a pot experiment. Results indicate dramatic enhancement of the activities of soil urease, protein enzyme and invertase with increasing rates of sewage sludge in compound fertilizer under consistent N, P, K amounts. At the same time, there is observable improvement in the color of grass, while the grass-cuttings and tillering number increase. And especially in the middle to late growth stages, grass color improves by two grades, weight of grass-cuttings increases by 10 ～ 15 g·pot^-1, tillering increases by 30 ～ 50 tillers per pot, while permeability of cell membrane reduces by 40%. However, if sewage sludge N nutrient goes above 60%, the sewage sludge fertilizer has very little effect on grass. Therefore, in using compound sewage sludge fertilizers, N nutrient should be kept within 60%.

---