摘要
为了探讨鸡粪有机肥(M)与化肥(N)配施对杨树苗光合性能和养分吸收特性的作用效果,通过盆栽试验,研究了N100(尿素提供100%的氮)、M10N90(鸡粪和尿素分别提供10%和90%的氮)、M30N70(鸡粪和尿素分别提供30%和70%的氮)和M50N50(鸡粪和尿素各提供50%的氮)等处理对一年生杨树苗光合作用、叶绿素含量、根系活力和构造以及养分吸收的影响。结果表明,同N100处理相比,M30N70处理明显提高了杨树苗叶片的净光合速率、蒸腾速率、气孔导度和胞间CO2浓度;叶片的叶绿素含量和根系活力分别提高了45.80%和36.39%。配施鸡粪有机肥有利于杨树苗根系的生长,尤其是增加了毛细根的重量和其在根系体系中的比例。此外,M30N70处理还明显提高了杨树苗根、茎和叶干物质的积累量,并显著增加了氮、磷和钾的养分吸收量,相比N100处理分别增加了44.99%,65.11%和65.04%。与M30N70处理相比,M10N90和M50N50处理对杨树苗光合作用和养分吸收特性的影响较小。综合分析认为,鸡粪有机肥与化肥以3∶7比例配施对杨树苗光合性能和养分吸收的作用效果最佳。
A pot experiment was performed with five treatments, i.e. CK（neither urea nor chicken manure was applied）, N100 （100% of nitrogen was provided by urea）, M10N90 （10% and 90% of nitrogen were provid ed by chicken manure and urea, respectively）, M30N70 （30%and 70% of nitrogen were provided by chicken manure and urea, respectively） and M50N50 （50%and 50%of nitrogen were provided by chicken manure and urea, respectively）. The experiment was to determine the effect of chicken manure co-applied with inorganic fertilizer on the photosynthesis, chlorophyll content and root activity and construction, as well as the growth and nutrient uptake of one-year-old poplar seedlings. Results showed that the photosynthetic（Pn）, transpira tion rate（Tr）, stomatal rate（Gs） and intercellular concentration（Ci） of poplar seedlings leaves in M30 N70 treatment were significantly increased as compared with that in Nlo0 treatment. M30 N70 treatment also resul ted in the higher chlorophyll content and root activity, with increases of 45.80% and 36.39% as compared with the N100 treatment, respectively. Chicken manure co-applied with inorganic fertilizer had beneficial effects on the root growth of poplar seedlings, especially the weight and the ratio of fine root. In addition, compared with the N100 treatment, the M30NTo treatment significantly increased the root, shoot and dry leaf weight accumulation, as well as the N, P and K contents. Consequently, the N, P, and K uptakes increased by 44.99%, 65.11% and 65.04%, respectively. However, in M10N90 and M50N5o treatments, less effect on photosynthesis characteristics and the nutrient uptake of one-year-old poplar seedlings was observed than that in M30N70 treatment. Chicken manure co-applied with inorganic fertilizer, especially the M30N70treatment, achieved the best effects on the growth and nutrients uptake of poplar seedlings.
出处
《水土保持通报》
CSCD
北大核心
2013年第5期19-23,共5页
Bulletin of Soil and Water Conservation
基金
山东省农业重大应用技术创新课题"杨树超高产栽培关键技术研究"
