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田菁(Sesbania cannabina Pers)是一种豆科植物,茎直立、圆柱形,分枝多,株高1—4米;羽状复叶;小叶条状,矩圆形,长12—14毫米,20—40对小叶着生在一个叶柄上;花蝶形,长1—1.5厘米,3—8朵排成腋生疏松的总状花序,花萼钟状,萼齿近三角形,花冠黄色,旗瓣扁圆形,上有紫斑或无;荚果圆柱状,条形,长15—18厘米;种子多数,矩圆形,绿褐或棕褐色,千粒重12—18克。田菁原产热带。在我国主要分布在福建、浙江、江苏、广东、台湾等省的沿海地区,河南、山东、山西、河北、辽宁等省也有栽培,是盐碱易涝地区的好绿肥。田菁产草量高,肥效大,一般每亩产鲜草1500—3000斤,高的可达4000—5000斤。每千斤鲜草相当于26斤硫
Sesbania cannabina Pers is a leguminous plant with erect stems, cylindrical, branched, 1-4 m in height; pinnate; leaflet, oblong, 12-14 mm long, 20-40 pairs of leaflets born in a petiole; flower butterfly, 1-1.5 cm long, 3-8 rows axillary loosely arranged racemes, calyx bell-shaped, calyx teeth nearly triangular, corolla yellow, petals flat Round, purple or on; pod cylindrical, strip, 15-18 cm long; the majority of seed, oblong, green brown or brown, grain weight 12-18 grams. Tian Jing native tropical. In China, it is mainly distributed in the coastal areas of Fujian, Zhejiang, Jiangsu, Guangdong, Taiwan and other provinces. Henan, Shandong, Shanxi, Hebei and Liaoning provinces also have cultivation and are good green manures in saline-alkali flood prone areas. Tian Jing high yield grass, fertilizer efficiency, generally 1500-3000 pounds per mu fresh grass, high up to 4000-5000 pounds. Each kilogram of fresh grass is equivalent to 26 pounds of sulfur