一是作物在生长发育过程中,都会分泌出一定的物质(包括某种气体),而黄瓜和西红柿的分泌物有互相抑制生长发育的作用,二者如果同棚相邻栽培,其生长势都将受到影响。二是黄瓜和西红柿都易发生和遭受蚜虫的危害,一旦一方发生蚜虫,就会很快地蔓延到另一方,增加有效控制的难度。此外,黄瓜和西红柿在生长发育过程中所需的温度不同,因此在管理上很难做到兼顾二者,往往顾此失彼,影响经济效益。 First, the growth and development of crops in the process, will secrete a certain substance (including some kind of gas), and cucumber and tomato secretions have mutual inhibition of growth and development of the role of the two if the studio adjacent cultivation, the growth potential Will be affected. Second, cucumbers and tomatoes are prone to and suffer from the harm of aphids, once aphids on one side, it will quickly spread to the other side, increasing the difficulty of effective control. In addition, cucumber and tomato in the process of growth and development of the required temperature is different, so it is difficult to manage in both the two, often take this one off, affecting economic efficiency.