我国农民在生产实践中积累了关于农作物种间关系的丰富知識。远在后魏之前,我国农民就懂得合理地利用有利的种間关系来提高农作物的产量和品质。例如,《齐民要术》中提到桑田与绿豆或小豆间作时写道:“二豆良美,潤泽谷桑”,进而指出:“种禾豆,欲得逼树,不失地利,田又調熟”。談到瓜与豆的关系时又写道:“瓜性弱苗,不能独生;故須大豆为之起土”。农作物之間也有 The peasants in our country have accumulated rich knowledge about the interspecific relations among crops in their production practices. Far before the post-Wei, our peasants know how to make good use of the favorable interspecies relations to increase the yield and quality of crops. For example, “Qi Min Yao Shu” mentions that during the intercropping of mulberry with mung bean or adzuki bean, it wrote: “Two beans are beautiful and moist.” Tune again “. When it comes to the relationship between melons and beans, they also wrote: ”Cui weak seedlings, can not only be born; There is also between crops