不同有机肥添加量对隔山消生长及生理特性的影响OA

In order to study the effects of different amounts of organic fertilizer on the growth and physiological characteristics of Cynachum wilfordii cultivated in greenhouse,the experiment was conducted under pot conditions,five treatments were set including no fertilization control(T1),conventional fertilization(T2),conventional fertilization+250 g·plant-1 organic fertilizer(T3),conventional fertilization+500 g·plant-1 organic fertilizer(T4),and conventional fertilization+750 g·plant-1 organic fertilizer(T5),and the changes of fresh weight,chlorophyll,carotenoid and nitrate content in organs of Cynachum wilfordii were studied.The results showed that T5 treatment was significantly improved the fresh weight of leaves,stems and roots,when at the harvest period,the fresh weight in each organ was 209.04%,435.14%,470.32%higher than T2 treatment,and was 24.77%,48.95%,36.78%higher than T4 treatment.The proportion of fresh root mass in T3,T4 and T5 treatments had no significant difference,which was significantly higher than T1 and T2 treatment.The T5 treatment chlorophyll and carotenoid contents were significantly higher than other treatments,T3 and T4 treatment were significantly higher than T2 treatment.The T5 nitrate nitrogen content was 66.74%,14.80%,41.17%and 93.67%higher than T2 treatment during the whole test period,it was no significant difference between T3 and T2 treatment.In conclusion,the suitable amount of organic fertilizer added in Cynachum wilfordii greenhouse cultivation are 750 g·plant-1.