灌溉试验是农业科学实验的一项重要内容。灌区要达到旱涝保收,稳产高产,就要研究农作物的需水量、省水高产的灌溉制度和灌水技术,研究土壤水分的运动规律和水利土壤改良的措施等。灌区群众在灌溉实践中所创造的先进经验和外地的灌水经验,也要通过科学实验进一步验证和提高,以便推广;灌溉工作中不断出现的新问题,有的也要通过试验解决。要做灌溉试验,首先要明确试验目的,针对主要矛盾安排试验计划,不可一次贪多求全。同时,要注意试验的准确性和代表性。所谓准确性就是除研究因素之外,其它条件必须基本一致;试验观测数据必 Irrigation experiments are an important part of agricultural science experiments. Irrigation areas to achieve drought and flood protection, stable and high yield, it is necessary to study crop water requirements, high water saving irrigation system and irrigation technology, research on the law of soil moisture and water conservancy soil improvement measures. The advanced experience created by the irrigation people in irrigation practice and the experience of irrigation in the field should also be further verified and enhanced through scientific experiments so as to be popularized. Some emerging new problems in irrigation work must also be solved through experiments. To do irrigation experiments, we must first clear the purpose of the experiment, the main contradiction for the pilot program, can not be more than one for all. At the same time, pay attention to the accuracy and representativeness of the test. The so-called accuracy is in addition to research factors, other conditions must be basically the same; experimental observation data will