国外对于不同地区的各种作物,都编有灌溉日程(Schedule)指导作物的适时灌溉。这是充分利用水资源提高收获量的一项重要措施,应该引起普遍重视,为此,本刊特请余登苑同志从农业栽培角度,提出作物生长与水的关系,写出这篇文章供读者参考,借以推动各地着手编制灌溉日程,进行尝试和推广。 Foreign countries for various crops in different regions, have compiled an irrigation schedule (Schedule) to guide the timely irrigation of crops. This is an important measure to make full use of water resources to increase harvesting amount, which should be given universal attention. For this reason, we hereby request that Mr. Yu Dengyuan put forward the relationship between crop growth and water from the point of view of agricultural cultivation and write this article for readers’ reference , In order to promote around the preparation of irrigation schedule, to try and promote.