常规施肥下几个香蕉品种幼苗生长和养分含量比较初探

在实验室条件下分别对5个不同香蕉品种幼苗进行常规施肥管理，并对其长势和倒2叶的N、P、K、S含量进行观测和测定。结果表明：5个参试品种的假茎粗和假茎高增大趋势无显著差异，巴西蕉和贡蕉绿叶数有所减少。5个参试品种中．幼苗叶片N含量大小顺序为：巴西蕉〉广粉1号〉贡蕉〉粉杂1号〉热科1号：P含量大小顺序为：贡蕉〉巴西蕉〉广粉1号〉热科1号〉粉杂1号：贡蕉和热科1号幼苗叶片K的含量较大．粉杂1号最小；而含S量大小顺序为：广粉1号〉粉杂1号〉贡蕉〉热科1号〉巴西蕉。5个参试品种叶片的N、P、K、S含量的大小顺序一致，均为为：N〉K〉P〉S。

Growth and Nutrient Contents in Different Varieties of Banana Seedlings under Conventional Fertilization

To discuss different varieties of banana seedlings growth and nutrient contents characteristics, the growth of five different banana varieties and the contents of N, P, K and S were studied under the condition of laboratory. The results showed： there＇re no significant difference of the changeable trend based on the thickness and height of the 5 kinds of banana pseudo-stems, but the leaves of BaxiJiao （Musa AAA Cavendish） and Gongjiao （Musa AA Sucrier） decreased. Among the five varieties of banana samples, the content of N was found to follow the order： Baxi Jiao （Musa AAA Cavendish） 〉 Guangfen No.1 〉 Gongjiao （Musa AA Sucrier） 〉 Fenza No.l 〉 Reke No.l; the content of P was found to follow the order： Gongjiao 〉 Baxi Jiao 〉 Guangfen No.1 〉 Reke No.1 〉 Fenza No.l; Gongjiao and Reke No.1 were higher than other there varieties in the content of K, while Fenza No.1 was the lowest. At the same time, the content of S was found to follow the order： Guangfen No.l 〉 Fenza No.l 〉 Gongjiao 〉 Reke No.l 〉 Baxi Jiao. The performance of the five varieties leaves＇ samples was found to be consistent on the content of N, P, K, S, which was N 〉 K 〉 P 〉 S.