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十字花科蔬菜包括白菜、甘蓝、花椰菜、芥菜和萝卜等。这类蔬菜种子小、发芽快、出苗率低,而且其播种期大都处于高温暴雨期,必须严格掌握其播种育苗技术,才能提高出苗率,培养健壮幼苗。一、选地作床。选择通风、水源条件好的阴凉地作床。采用护根育苗的苗床,床底要整平欠细,浇足底水,用木板轻压拍。种子直接播于苗床者,苗床地则应选择沙壤土,并且需施入腐熟土杂肥1000公斤/亩,苗床应深挖、欠细、整平、底水充足。二、肥球和营养土块制作。营养土均采用7份干塘泥或菜园土加3份腐熟土杂肥混合配制而成。肥球紧而不实,松而不散;紧密排放;营养土块要实而不板,与苗床底接触良好。用小木条或铅笔头在营
Cruciferous vegetables include cabbage, cabbage, cauliflower, mustard and radish. Such vegetables are small seeds, germination fast, low emergence rate, and most of its sowing time in high temperature rainstorm, it is necessary to strictly control its sowing seedling technology in order to improve the emergence rate, robust seedlings training. First, the election for the bed. Choose ventilation, good water conditions for a cool bed. Seedling nursery nursery bed, the bed should be leveled fine, pour the foot of water at the end, with wood gently press. Sowing seeds directly in the seedbed, seedbed should be selected sandy loam, and need to be applied to the mixed fertilizer of 1000 kg / acre, seedbed should be deep digging, less fine, leveling, enough water at the end. Second, fat ball and nutrition soil production. Trophic soil are used 7 copies of dry pond or garden soil plus 3 parts of mixed maturity mixed fertilizer. Fat ball tight but not real, loose and scattered; close to emissions; nutrition soil block to the real and not board, and seedbed bed contact well. Head with batten or pencil at battalion