常规施肥下几个香蕉品种幼苗生长和养分含量比较初探

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

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。

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.