有机肥对百香果扦插苗生长及生理特性的影响OA

In order to determine the optimal application rate of organic fertilizer for the cultivation of Passiflora edulis Sims cutting and explore the effects of different fertilizer dosages on seedling growth and physiological indices.The experiment was conducted under pot conditions,six treatments were set up including no fertilization control(T1),conventional fertilization(T2)and conventional fertilization adding 150g·plant-1(T3),300g·plant-1(T4),450 g·plant-1(T5)and 600 g·plant-1(T6)of organic fertilizer respectively,and the changes of fresh weight,chlorophyll and root activity of passion fruit were studied.The results showed that at 100 days after seedling recovery,root fresh weight of T5 was significantly increased by 54.14％,40.72％and 43.39％compared with T1,T2 and T3,respectively.Stem fresh weight of T5 was significantly increased by 184.07％,96.13％,29.78％and 31.82％compared with T1,T2,T3 and T4,respectively.Leaf fresh weight of T5 was significantly increased by 329.51％,48.89％,53.85％and 12.97％relative to T1,T2,T3 and T4,respectively,and no significant difference was found between T5 and T6.Compared with T1,T2 and T3,T5 significantly improved chlorophyll and carotenoid contents of passion fruit cuttings throughout the experimental period.Compared with T5,carotenoid content of T6 decreased significantly by 6.70％and 11.69％at 75 and 100 day after seedling recovery,respectively.The root activity of T5 was higher than that of T1,T2,T3,T4 and T6 during the whole experiment.Comprehensive analysis showed that the appropriate amount of organic fertilizer for the cultivation of Passiflora edulis Sims cuttings was 450g·plant-1.