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1.叶菜类:如大白菜、上海青、红菜苔。菠菜、芹菜.苋菜、甘兰、球白、小白菜、黑白菜等。这类蔬菜全生育期需要肥水较多,尤以速效氮肥更为敏感和迫切,所以除施足基肥外,于苗期、中后期如能进行1％～2％尿素(或硫酸铵)溶液喷施,7～10天一次,连续喷2～4次,不但能加速叶片抽生和迅速生长,面且能节约成本,提高氮肥利用率(比土壤施入要高20％～30％)。如能在尿素水中加入绿芬威1号(1000～1500倍)、802(2000～3000倍)、丰收牌植生素(1000～1500倍)、叶面宝(1000～1500倍)等叶面肥(只混合其中某一种)一起喷施,则增产效果更为显著。
1. Leafy vegetables: such as Chinese cabbage, Shanghai Green, Red Moss. Spinach, celery, amaranth, cabbage, white ball, cabbage, black cabbage and so on. Such vegetables need more fertilizers throughout the growth period, especially the more effective nitrogen fertilizer more sensitive and urgent, so in addition to Shi-based fertilizer outside, at the seedling stage, if the latter can be 1% to 2% urea (or ammonium sulfate) solution spray Shi, 7 to 10 days time, continuous spray 2 to 4 times, not only to speed up leaf pumping and rapid growth, and can save costs, improve nitrogen utilization (higher than the soil applied to 20% to 30%). If you can join in the urea water, Green Fenwei 1 (1000 to 1500 times), 802 (2000 to 3000 times), Harvest harvest brand of biochemical (1000 to 1500 times), foliar treasure (1000 to 1500 times) and other foliar fertilizer (Only mixed with one of them) spray together, the yield effect is more significant.