蚕豆要获得667平方米250—300公斤的高产稳产,就要保证有“年前枝,年后身,上开花,下结荚”的长势长相:在栽培策略上要“三争”:争早苗全苗、争粗壮分枝、争多结角荚。在具体措施上,除选用优良品种、适期早播、施足基肥、合理密植外,在冬季与早春期间,培管上要抓好以下三项工作。1、早施荚肥。蚕豆进入开花结荚期,是营养生长与生殖生长双旺时期,此时根系由旺变衰,根瘤固氮能力下降,加之营养生长消耗了大量养分,就会造成花荚脱落,影响产量。为了提高蚕豆单株角数和每角粒数,必须普遍追施花荚肥,同时用0.2%磷酸二氢钾进行根外喷 Broad beans to get high yields of 667 square meters 250-300 kg, it is necessary to ensure that there are “years ago branches, years ago, the flowering, the next pod” growing looks: cultivation strategy to “three contention” All seedlings, fight stout branches, fight more than the angle pods. In the specific measures, in addition to selection of fine varieties, early sowing date, Shizujifei, reasonable close planting, in winter and early spring, training should pay attention to the following three tasks. 1, as early as pod fertilizer. Broad beans into the flowering pod stage, is the growth of vegetative and reproductive Shuangwang period, when the root by the waning change, nodulation ability to fix nitrogen, coupled with nutrient depletion of a large number of nutrients, it will cause flower pods fall, affecting the yield. In order to improve the number of per plant and angle per plant grain number, must be topdressing flower pod fertilizer, while 0.2% potassium dihydrogen phosphate