甘蓝和芹幕种在一起,它们就会生长不良,甚至死亡。马铃薯附近种葵花、蕃茄、苹果、黄瓜和南瓜,容易患晚疫病。高粱地里种芝麻,高粱根的分泌物可使芝麻延迟成熟时间。上茬种荞麦的地块,如果下茬种玉米,玉米就长不好。西红柿和黄瓜种在一起,两者都长不好,因为它们都能分泌出一种物质抵制对方。芥麦和蓖麻种在一起,芥麦的分泌物会使蓖麻下部的叶子枯死。□ Cabbage and celery together, they will grow poor, or even death. Potato near the sunflower, tomato, apple, cucumber and pumpkin, prone to late blight. Sesame seeds in sorghum, sorghum root secretions can delay the maturation of sesame time. On the crop of buckwheat plots, if the next crop of corn, corn will not grow well. Tomatoes and cucumbers grow together, both of which are not good because they all secrete a substance to resist each other. Together, mustard and castor, the secretion of mustard, leaves the leaves of the lower part of castor. □