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要想鸡、鸭多生蛋,就需多养母鸡、母鸭;要想多产牛奶就要多养母奶牛。同样道理,若使粮食和瓜果类作物多开雌花也可达到多产粮食多结瓜果的目的。动物的性别大多数在胚胎期就已定型,而植物的性别,一般在生长发育过程中逐步分化形成,除了受遗传物质控制外,在一定程度上,还受外界环境条件的影响。因此,如能因势利导,人为地改变其外界条件,便可以控制和改变某些农作
To chicken, duck and more eggs, you need to raise more hens, ducks; to prolific milk will have more cows. By the same token, if the grain and fruit crops are opened more than flowers, the purpose of producing more grain and more fruit can be achieved. Most of the animal’s gender has been stereotyped in the embryo, while the plant’s gender, usually in the process of growth and development gradually differentiated to form, in addition to genetic material control, to some extent, but also by the external environmental conditions. Therefore, if we can make the best of our own circumstances and artificially change our external conditions, we can control and change certain types of farming