施肥对早熟禾生长及叶片色素含量的影响

摘要

以城市正常生长的4年生早熟禾为试材,设计4个烟草专用肥施用量处理:CK,不施肥;ZH1,97.03 kg/hm2;ZH2,116.47 ks/hm2;ZH3,135.93 kg/hm2,研究了施肥对早熟禾生长以及叶片色素含量的影响.结果表明,随着施肥量的增加,早熟禾株高逐渐降低;在施肥处理中ZH1的生长量最高,ZH3最低:叶绿素a含量ZH3最高,叶绿素b含量表现为ZH1>ZH3>ZH2,类胡萝卜素含量ZH2最高;各施肥处理叶片内色素含量均极显著高于对照.综合分析认为,ZH2处理为最佳处理.%Four treatments were designed to study the effects of different fertilizer rates on the growth and pigment content in leaves of 4 -year- old Poa annua grown normally in city, which were CK, ZH1, ZH2 and ZH3 with 0, 97.03, 116. 47, 135.93 kg/hm2 of the special fertilizer for tobacco respectively. The results showed that the plant height of Poa annua gradually decreased with the increase of fertilizer application rate;the biomass of ZH1, the chlorophyll a content of ZH3 and the carotenoid content of ZH2 were the highest; the chlorophyll b content of ZH1 was higher than that of ZH3, while that of ZH2 was the lowest; the pigment content in leaves of each fertilization treatment was higher than that of control The comprehensive analysis showed that ZH2 was the best treatment.