生物质炭基肥对香蕉生长及产量的影响

Effect of Biochar-based Fertilizer on Banana Growth and Yield

为研究生物质炭基肥对香蕉生长及产量的影响,以巴西蕉为试验材料,以常规施化肥为对照,设生物质炭基肥处理1600、2000、2400和2800 g/株,研究炭基肥对香蕉生长过程中农艺性状、光合特性和产量的影响,结果表明,炭基肥能够显著增加香蕉的假茎高度、假茎粗、叶片数、叶长和叶宽,提高香蕉叶片PSAD值、净光合速率、气孔导度、蒸腾速率和胞间二氧化碳浓度,对单株产量、指果长、指果粗、单果重和果指总数均有显著影响,在炭基肥施用量为2400 g/株时,香蕉生长状况最好,光合能力最强,产量最高,是较好的施肥模式。

In order to study the effect of biochar-based fertilizer on banana growth and yield,Brazil banana was dressed with biochar-based fertilizer at the rate of 1600,2000,2400 or 2800 g/plant,with chemical fertilizer as the control.The effects of biochar-based fertilizer on agronomic traits,photosynthetic characteristics and yield during banana growth were analyzed.The results showed that biochar-based fertilizer significantly increased the height and thickness of pseudo-stem,number of leaves,and leaf length and width of banana.The biochar-based fertilizer increased the PSAD value,net photosynthetic rate,stomatal conductance,transpiration rate and intercellular carbon dioxide concentration in banana leaves,and had significant effect on the yield per plant,finger fruit length,finger fruit thickness,single fruit weight and total number of fruit fingers.When dressed with biochar-based fertilizer at a rate of 2400 g/plant,banana grew the best,had the highest photosynthetic capacity and yielded the highest among the treatments.