菠菜生长期短,播种采收期灵活,在提高复种指数、出口创汇等方面,占有不可替代的重要地位。出口菠菜收购标准严格,为了指导广大菜农合理施肥,提高出口合格率及产量,1997年春,我中心进行了菠菜氮磷钾不同用量及配比试验。材料与方法试验田为一般农田,中棕表浅位夹粘棕壤,土壤有机质含量为1.131%,全氮0.101%,碱解氮75.9×10~(-6),速效磷14.5× Spinach growth period is short, sowing and harvesting flexibility, in improving the multiple cropping index, export earnings, etc., occupy an irreplaceable important position. Export spinach strict standards of acquisition, in order to guide the majority of vegetable farmers reasonable fertilization and increase export pass rate and yield, spring 1997, I conducted a spinach N, P and K different dosage and the ratio of test. MATERIALS AND METHODS The experimental field was a general farmland with medium-brown surface sticking brown soil. Soil organic matter content was 1.131%, total nitrogen 0.101%, available nitrogen 75.9 × 10 -6, available phosphorus 14.5 ×