瓜、豆类疏菜营养钵育苗时,不少菜农主观上为了保险,往往增加播种量,每钵3～4粒,甚至更多。结果钵成苗率(有苗钵数占总钵数的百分比)很高,但却带来了几个弊端:(1)容易形成高脚苗;(2)苗病发生重;(3)增加间苗用工;(4)浪费菜种等。相反,在大面积生产中又一刀切每钵播1～2粒,一部分品种或农户的钵成苗率又过低。显然,从理论上确定每钵播种的适宜 Melons, pulses, vegetables, nutrition bowl nursery seedlings, many vegetable farmers subjectively for insurance, often increasing seeding, 3 to 4 per bowl, or even more. Results Bowl seedling rate (seedling bowl with a few percent of the total number of) is very high, but it has brought several drawbacks: (1) easy to form tall seedling; (2) heavy seedling disease; (3) increase Miao Miao employment; (4) waste of vegetables and so on. On the contrary, in large-scale production, they can also sow one or two grains per bowl, and the percentage of seedlings of some varieties or farmers is too low. Obviously, it is theoretically possible to determine the suitability of each pot for sowing