它是微灌技术之一。微灌是微水灌溉之简称，它是通过有压供水管道系统与安装在未级管道上的灌水器（滴头、微喷头、滴灌管、微喷带、渗灌管等），将水和植物生长所需的养分以较小的流量，均匀准确地直接输送到作物根部附近的土壤表面和土层中或作物叶面，实现局部灌溉，使作物叶面或根部经常保持在最佳水、肥、气状态的灌水方法。其特点是灌水量小，一次灌水延续时间长，周期短，能够较精确地控制灌水量，把水和养分直接输送到作物根部附近的土壤或叶面。

It is one of the microirrigation techniques. Micro-irrigation micro irrigation water is referred to as ", it is through a pressure water supply pipe system and installation is in not piping (drop head, micro sprinkler and drip irrigation pipe, micro spray zone (poa pratensis) pipe, etc), water and nutrients required for plant growth in smaller flow rate, uniform accurately delivery directly to the crop roots near the soil surface or crop foliar and soil layer, realize the local irrigation, crop leaves or roots often remain in a state of optimal water, fertilizer, gas water method. It is characterized by low irrigation water, an irrigation duration long, short cycle, can accurately control the irrigation water, water and nutrients directly to the soil or leaf near the roots.

滴灌系统由水源工程、首部枢纽（包括水泵、动力机、过滤器、肥液注入装置、测量控制仪表等）、各级输配水管道和滴头等四部分组成，其系统主要组成部分如下：

Drip irrigation system by water source project, the first hub (including water pump, engine, filters, liquid fertilizer injection device, measuring control instrument, etc.), various ShuPeiShui pipeline and drops the first four parts, main components of the system are as follows:

1.动力及加压设备包括水泵、电动机或柴油机及其他动力机械，除自压系统外，这些设备是微灌系统的动力和流量源。

1. Motivation and pressurized equipment including pumps, electric motor or diesel engine and other machinery, in addition to the pressure system, the equipment is of micro-irrigation system of power source and flow.

2.水质净化设备或设施有沉沙（淀）池、初级拦污栅、旋流分沙分流器、筛网过滤器和介质过滤器等。可根据水源水质条件，选用一种组合。筛网过滤器的主要作用是滤除灌溉水中的悬浮物质，以保证整个系统特别是滴头不被堵塞。筛网多用尼龙或耐腐蚀的金属丝制成，网孔的规格取决于需滤出污物颗粒的大小，一般要清除直径75微米的泥沙，需用200目的筛网。砂砾料过滤器是用洗净、分选的砂砾石和砂料，按一定的顺序填进金属圆筒内制成的，对于各种有机或有机污物、悬浮的藻类都有较好的过滤效果。旋流分沙分流器是靠离心力把比重大于水的沙粒从水中分离出来，但不能清除有机物质。

The water quality purification equipment or facilities have the sediment sink, the primary retaining grid, the cyclone separating shunt, the sieve filter and the dielectric filter etc. According to the water quality condition, a combination can be chosen. The main function of screen filter is to filter the suspension material in irrigation water to ensure that the whole system, especially the drop head, is not blocked. Screen use nylon or corrosion of the metal wire, the specifications of the mesh depends on the size of the need to filter out the dirt particles, generally to remove sediment, 75 microns in diameter with 200 mesh screen. Gravel filter material is to use clean, sorting of sandy gravel and sand material, according to certain order fill in cylinder made of metal, for a variety of organic or organic wastes and suspended algae has good filtering effect. The diversion shunt is separated from the water by centrifugal force, which is greater than the water, but not the organic matter.