蔬菜生产与城乡人民生活密切相关。河南省近十几年来，蔬菜生产发展很快，１９９６年比１９８６年面积增加３１．２万ｈｍ２，增加了１倍多。然而单产仅增加了２３．３％。这除与蔬菜栽培技术有关外，不合理施肥技术是其主要制约因素。因此，近几年来在加拿大钾磷研究所北... Vegetable production and urban and rural people’s lives are closely related. In recent ten years, Henan Province has witnessed rapid development of vegetable production. In 1996, its area was increased by 312,000 hm2 over 1986, an increase of more than 100%. However, yields increased only 23.3%. This is in addition to vegetable cultivation techniques, unreasonable fertilization technology is the main constraint. Therefore, in recent years in Canada Potash Institute North ...