深层施肥具有省肥、长效、高效的特点,运用在水田做基肥,特别是以深层追肥技术为中心,促进水稻高产栽培的技术革命,近十余年在国内外有新的发展,并在大面积上应用,获得良好效果。为了解决氮素肥料损失和由于栽培管理失当而引起的分蘖过盛,成穗率低,穗小粒少等影响高产稳产的严重问题,我们在学习外地经验基础上,进行了以深层追肥为中心的高产施肥技术试验,探讨其效果及适宜的施肥量和施肥期。兹将一年试验结果简报如下: Deep fertilization has the characteristics of fertilizer saving, long-lasting and high efficiency. It is a technological revolution to promote high-yielding cultivation of rice by using basal fertilizer in paddy field, especially deep-rooted top dressing technology. In recent ten years, there has been a new development at home and abroad. Large area application, get good results. In order to solve the serious problem of loss of nitrogenous fertilizer and excessive tillering caused by mismanagement of cultivation and management, low spike rate and few spikelet of small grains, we have made a deep and top-dressing based on our field experience High-yield fertilizer technology test, to explore its effect and appropriate amount of fertilizer and fertilization period. The results of a year trial will be briefed as follows: