【摘要】 在新建植的高羊茅草坪上 ,按照 10 g/m2 的等N量分别施入尿素、磷酸二铵、包裹型草坪专用肥 (国产 )和Osmocote控释肥料 ,以尿素为对照 ,研究不同施肥处理对草坪颜色、均一度、生长速度、分蘖密度、地下生物量和抗病性的影响。结果表明 ,Osmocote控释肥料养分释放速率最低、肥效最长 ,尿素养分释放速率最高、肥效最短 ;Osmocote肥料处理草坪颜色最好 ;磷酸二铵处理草坪抵抗夏季病害能力最强 ;尿素处理草坪均一度最差 ,磷酸二铵处理草坪均一度波动幅度最小 ;尿素处理草坪分蘖密度最高、地下生物量峰值最高且受环境影响变化剧烈 ;施用Osmocote控释肥料的草坪分蘖密度和地下生物量适中并且变化较平缓 ,有利于草坪草健康生长更多还原

【Abstract】 Urea, diammonium phosphate, the coated turf compound fertilizer and osmocote control release compound fertilizer were applied as a single split treatments at a N rate of 10g/m\+2 to the newly established tall fescue turf. Compared with urea control, effects of various fertilizations on color, uniformity, sward growth rate, tiller density, under ground biomass and disease resistance of turf were studied. The results were as follows: Among all examined fertilizers, the nutrient release rate of urea was the highest and that of osmocote fertilizer was the lowest. Effects of osmocote fertilizer last the longest and that of urea last the shortest. Osmocote fertilizer produced the best turf color; Resistance to summer diseases was better with diammonium phosphate treatment; Urea treatment produced the poorest uniformity, fluctuation ranges of uniformity was narrower with diammonium phosphate treatment; The peak value of turf tiller density and under biomass were the highest with urea treatment which turf tiller density and under biomass changed sharply; Osmocote fertilizer produced better color and uniformity, moderate and gently changed tiller density and under biomass and healthier turf.更多还原