摘要
Abstract
To clarify the effects of different microbial inoculants on the yield of baby Chinese cabbage in vegetable production in Ganzhou District,a field experiment was conducted in the Hexi Corridor's Ganzhou District.The control treatment applied only chemical fertilizers(urea at 375 kg/ha,superphosphate at 241.5 kg/ha,and potassium sulfateat 300 kg/ha),while 4 treatments added different biofertilizers,i.e.,carbon enzyme silicon calcium biofertilizer,live bacteria continuous cropping gram,lazy to the end,and Tukangyuan microbial agent,each at 30 kg/ha,in addition to the chemical fertilizers.The study determined the effects of the biofertilizers on photosynthetic characteristics,antioxidant enzyme activities(e.g.,peroxidase),and yield components.Results showed that adding different biofertilizers significantly increased yield by 5.10%to 30.61%compared with the chemical fertilizer control,with the Tukangyuan microbial agent treatment at 30 kg/ha achieving the highest yield of 128.06 t/ha.In terms of photosynthetic characteristics,the Tukangyuan treatment performed best,with a net leaf photosynthetic rate of 15.64 μmol/(m2·s),transpiration rate of 7.89 mmol/(m2·s),stomatal conductance of 348 mmol/(m2·s),and intercellular CO2 concentration of 366 μmol/(m2·s),an increase of 155.56%,113.82%,190.00%,and 65.61%,respectively,over the control.Additionally,this treatment produced the highest leaf number(39.65),horizontal stem length(28.74 cm),and vertical stem length(36.54 cm),its protein content,peroxidase activity,and superoxide dismutase activity were also higher than those in other treatments,while malondialdehyde content was significantly reduced.Therefore,in Ganzhou District,applying 30 kg/ha of Tukangyuan microbial agent can improve photosynthetic efficiency,promote plant growth and development,and enhance baby Chinese cabbage yield.关键词
生物菌肥/娃娃菜/光合特性/产量/品质Key words
Biofertilizer/Baby Chinese cabbage/Photosynthetic characteristic/Yield/Quality分类
农业科技
