施肥对草地早熟禾草坪质量的影响

本试验是以不同施肥水平对建植四年的草地早熟禾草坪质量指标的影响进行了研究。结果表明，在四种施肥处理中，草地早熟禾的生长速度随着施肥量的增加而提高。施肥改善了草地早熟禾的以不同颜色，但同时降低了草坪的整齐度，加重了病害。综合考虑应采用每次每平米５克氮，３．３克Ｐ２Ｏ５和３．３克Ｋ２Ｏ或１０克氮，６．７克Ｐ２Ｏ５和６．７克Ｋ２Ｏ的施肥水平。其中每次每平米１０克氮，６．７克Ｐ２Ｏ５和６．７克Ｋ２Ｏ的施肥

Effects of Fertilization on the Turf Quality of Kentucky Bluegrass

Effects of fertilization on the quality of kentucky bluegrass turf was studied at an estab-lished turf for four yeare in scientific garden of China agricultural university. The fertilizer formulas with a3: 2: 2 ratio of N: P2O5: K2O were used and three levels fertilization. The result show as follows: In fourfertilizer treatments, the turf grasses growth rata increased as the increasing quantity of fertilizers fertilizedtreatments made better turf greenness,but, decreased the turf uniformity and increased the degree of dis-ease as increasing of fertilizers. Considering both of turf greenness and uniformity, fertilized treatments of5g N + 3.3g P2O5 + 3 .3g K2O or 10g N + 6.6g P2O5 + 6.6g K2O/m2 with two times per year are betterfor kentucky bluegrass turf. The lasting high density of tiller was obtained by fertili zed wilh 10g N +6.6g P2O5 + 6. 6g K2O/m2 with two times per year in kentucky bluegress turf. The higher undergrounbiomass was obtained by fertilized with 10g N + 6. 7g P2O5 + 6. 7g K2O/m2 two times per year withoutfertilizing. The number of the productive tillers decreased with the increasing of fertilizer quantity.