香蕉钾镁配施效应研究

香蕉钾镁配施技术研究结果表明,土壤有效钾含量中等和有效镁含量缺乏的粤西香蕉园,在施用K2O 990 kg /hm2的基础上配施Mg 36 kg/hm2,可增产2 038 kg/hm2、产量提高4.8%,每hm2增收3 385元、种植效益提高8.7%;在施用K2O 1 170 kg/hm2基础上配施Mg 72 kg/hm2,可增产3 772 kg/hm2、产量提高9.1%,每hm2增收6 196元、种植效益提高17.4%.研究结果还表明,蕉园在提高香蕉钾肥用量的同时必须适当提高镁肥用量,才能获得较好的增产增收作用.

Study on the effect of combined K-Mg fertilization on banana

While soil in banana plantation located in western Guangdong contatined medium K and deficient Mg,banana yield comparatively increased 2 038 kg/hm~2 and 3 772 kg/hm~2 at the level of the amount of potassium oxide 990 kg/hm~2 and(1 170) kg /hm~2 applying the amount of Mg was 36 kg/hm~2 and 72 kg/hm~2,yield increased by 4.8% and 9.1%,while plantation income of banana increased 3 385 yuan/hm~2 and 6 196 yuan/hm~2,increased by 8.7% and 17.4%.If increased the amount of K or Mg alone,the yield and the plantation income of banana will be declined.