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机械深施化肥,是按照农艺要求,用机械将一定量的化肥施入土壤中预定部位,使其达到深浅一致、施量均匀、覆盖严密,为农作物吸收利用创造最佳条件,减少损失,提高化肥利用率。机械深施化肥可按基肥、种肥和追肥的不同用途采用不同的方式进行。作基肥和种肥时,通常采用复式作业机具,在耕地或播种的同时,将化肥施入土层中。作种肥时要施入种子下方或侧方。作追肥时,多采用小型或半机械化的机具,将化肥施入靠近根部的土层中。一、机械深施化肥的效益分析机械深施化肥是一项效益十分显著的措施,主要表现在以下方面:1.能提高化肥的利用率。化肥的利用率在土壤15厘米深度范围内,越深利用
Mechanical deep fertilizer, is in accordance with the requirements of agronomic, with a certain amount of chemical fertilizers applied to a predetermined part of the soil, so that it reached the same depth, uniform application, covering tight for the absorption and utilization of crops to create the best conditions to reduce losses and improve Fertilizer utilization. Deep chemical fertilizers can be based on different uses of base fertilizer, fertilizer and top dressing. For basal and seed fertilizers, it is common practice to use a duplex working implement to apply fertilizers into the soil layer while arable land or sowing is in progress. When applied as seed fertilizer to be applied to the bottom or side. For top dressing, more use of small or semi-mechanized machinery, the fertilizer applied to the soil near the roots. First, the mechanical analysis of the benefits of chemical fertilizer Deep mechanical fertilizer is a very significant benefit measures, mainly in the following areas: 1. Can improve the utilization of chemical fertilizers. Fertilizer utilization rate in the soil within the depth of 15 cm, the deeper use