论文部分内容阅读
在山东农业大学林学实验站杨树连作土壤中施加不同剂量(0.17、0.33、0.67、1.00、1.33和1.67 g·kg~(-1))的球毛壳ND35菌肥,测定不同处理下一年生杨树叶片的光响应过程、叶绿素荧光以及叶黄素循环等光合生理生化指标,研究球毛壳ND35菌肥对杨树根系和光合生理性能的影响.结果表明:随连作土壤中菌肥含量的增加,杨树叶片的叶绿素含量(Chl)呈增加趋势,电子传递速率(ETR)、净光合速率(Pn)、量子效率(Φ)、硝酸还原酶(NR)活性以及根系活力等生理指标均呈先增加后降低的趋势,依赖于叶黄素循环的光合热耗散呈降低趋势,而非光化学淬灭(NPQ)呈先降低后增加的趋势.在土壤施加菌肥剂量0.67和1.00 g·kg-1处理时,光合机构的过剩光能减少,向光化学反应方向分配的光能增多,光能利用效率提高.在连作土壤中施加适量(0.67~1.00 g·kg~(-1)))的球毛壳ND35菌肥,能在一定程度上提高杨树的根系生理活性,提高杨树叶片对光能的利用效率,有利于改善杨树叶片的光合机构运转状态,提高叶片的光合作用效率.
Different dosages (0.17, 0.33, 0.67, 1.00, 1.33 and 1.67 g · kg -1) of Gloeosporium chinensis ND35 were applied to the continuous cropping of poplar in the forest experiment station of Shandong Agricultural University. And the photosynthetic physiological and biochemical indexes of chlorophyll fluorescence and xanthophyll cycle in leaves were studied to study the effects of ND35 bacterial manure on the physiological properties of poplar roots and photosynthesis.The results showed that with the increase of bacterial fertilizer content in continuous cropping soil, , And the chlorophyll content (Chl) of poplar leaves showed an increasing trend. The physiological indicators such as electron transport rate (ETR), net photosynthetic rate (Pn), quantum efficiency (Φ), nitrate reductase (NR) (P <0.05), and the non-photochemical quenching (NPQ) firstly decreased and then increased with the increase of the dosage of 0.67 and 1.00 g · kg- 1, the excess light energy of the photosynthetic apparatus decreased, the light energy distributed to the photochemical reaction increased, and the utilization efficiency of light energy increased.A suitable amount of ball (0.67-1.00 g · kg -1) was applied to the continuous cropping soil Hair foliar ND35 fertilizer, to a certain extent, improve poplar Department of physical activity, improve poplar leaves light use efficiency, help to improve the photosynthetic apparatus of poplar leaves the operating state, improve photosynthetic efficiency of the blade.