目前在全国大办农业、大办粮食的伟大运动中,肥料的需要和来源之間的矛盾非常突出。因此,如何合理地經济用肥,使每一担肥料,都能发揮最大的增产效果,就成为一个很重要的問題。在这方面,我国农民从长期的生产实践中,积累有非常丰富的經济用肥的经驗,如沾秧根、塞秧兜、肥料拌种、条垄追肥等集中施肥的方法。我們几年来在大田和溫室中所进行的一系列的磷肥試驗結果,都証明了这种集中施肥方法的优越性。 At present, the contradiction between the needs and sources of fertilizers is very prominent in the great campaign of running large agricultural areas nationwide and running large cereals. Therefore, how to rationally and economically fertilize each of the manure-bearing materials to maximize the yield-increasing effect has become a very important issue. In this regard, our peasants have accumulated rich experience in economic fertilization from long-term production practices, such as the methods of concentrating fertilizers such as planting seedlings, seeding seedlings, fertilizer dressing, ridge and top dressing. The results of a series of phosphate tests that we have conducted in fields and greenhouses over the years have all demonstrated the superiority of this concentrated fertilization approach.