莲藕氮、钾、硼配合施用效果

Studies on Fertilization of Nitrogen,Potassium and Boron in Lotus Roots

莲藕采用氮、钾、硼配施可增大叶片半径，显著提高产量，以Ｎ１８Ｋ８Ｂ１配施产量最高，达３７７．７ｋｇ／６６７ｍ２，从而增加了净收益，每６６７ｍ２收益达１０５４．１元。缺硼、缺钾或减少氮肥用量均影响产量大幅度提高，在氮、钾充足的情况下施用硼肥的效益高，每千克硼肥可增收４８．０～１６４．６元／６６７ｍ２。

The combinated use of N,K and B increased leaf size and yield of lotus roots. The highest yield and profit,5.7t/ha and 15812 yuan/ha,were obtained when 270kg N,120kg K2O and 15kg B per hectare were used together. Deficiency of B,K and less use of N influenced yield greatly. Application of B fertilizer gained maximum profit. One kilogram B fertilizer could increase profit from 720 to 2469 Yuan/ha in the experiments. 