我县在试验、示范、推广化肥深施过程中,通过几年来的实践,摸索了“一深、二配、三定”的化肥深施技术经验。一深为了保证三熟作物整个生育期都有充足的营养,在施用化肥上,应该有一个合理的深度。如果塞得 In the course of experimenting, demonstrating and promoting the deep fertilization of fertilizers, our county, through years of practice, explored the technical experience of deep fertilization by “one depth, two assortments and three determinations”. A deep in order to ensure that three crops throughout the growing season have adequate nutrition, fertilization in the application, there should be a reasonable depth. If the plug