一忌连作。俗话说:“种豆勿种还魂豆”,意思是豆类作物要轮作换茬才能高产。蚕豆一般要与油菜、大麦、小麦等作物换茬,间隔期为1～3年。 二忌播种过密。农谚有“豆稀多荚,麦稀多叶”的说法。一般厢宽为1.3米,沟宽18厘米,行株距33厘米×21厘米。若土质肥、播种早的田块可稀些。每穴播种2粒。 A bogey. As the saying goes: “Beans do not rejuvenate beans,” meaning that beans crops to crop rotation in order to high yield. Broad beans and rape, barley, wheat and other crops for stubble, the interval of 1 to 3 years. Second, avoid planting too dense. Farming proverbs have “beans more pods, wheat more leafy” argument. General car width of 1.3 meters, 18 cm wide, row spacing of 33 cm × 21 cm. If the soil fertility, seeding early plots can be thin. Seeds per hole 2.