依据流体动力学原理，利用日光温室管网灌溉的静压能和文丘里管的特性，设计出在日光温室正常灌溉情况下的自动施肥系统。
An automatic topdressing system was designed on the base of the principle of hydrokinetics using energy of static pressure for pipe irrigation and the feature of Venturi pipe in solar greenhouse.
这些农田土壤的种植、翻耕、施肥、灌溉等管理措施不仅改变着农田生态系统中的化学元素循环，且给全球气候变化带来影响。
The management, such as plough, fertilization and irrigation etc. have not only changed the nutrient cycling in the farmland ecosystem system, but also brought influences to global climate.
文中介绍的一种灌溉技术叫做施肥灌溉，通过滴流灌溉系统把水和养分供给作物。
One of these technologies is fertigation, which is the direct application of water and nutrients to plants through a drip irrigation system.
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