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黑芥菜是一种适宜在盐碱地区作混播栽培的绿肥作物。耐寒抗盐,根系粗壮,纵向入土深109.5厘米,侧向分布达53厘米。当土壤中氯化钠含量小于0.2％时能正常生长;大于0.25％时生长严重受抑制。其根及分泌物呈酸性反应,PH在6.2—6.55之间。100株5—6片幼苗的根系每天分泌的酸达1.02毫克,有利于根际土壤中难溶性磷的逐步活化。在8月中旬玉米收后种黑芥菜,到10月
Black mustard is a green manure suitable for mixed sowing in saline-alkali regions. Cold-resistant and salt-tolerant, root stout, longitudinally deep 109.5 cm, lateral distribution of up to 53 cm. When the soil sodium chloride content of less than 0.2% to normal growth; more than 0.25% growth was severely inhibited. Its roots and secretions acidic reaction, PH between 6.2-6.55. The roots of 100 5-6 seedlings secrete 1.02 mg of acid per day, which is beneficial to the gradual activation of insoluble phosphorus in rhizosphere soil. Corn in mid-August after harvest of black mustard, to October