论文部分内容阅读
为探明微润灌对大田密植型作物生长与灌溉水利用效率的影响，以冬小麦为研究对象，采用大田完全随机试验设计方法，通过微润灌与滴灌（地下滴灌、地表滴灌）、无灌溉对比，研究微润灌对冬小麦生长、旗叶特性、产量及水分利用效率的影响。结果表明，微润灌冬小麦株高、干物质质量、群体增长率、旗叶特性、产量、作物水分利用效率及灌溉水分利用效率均高于未灌溉处理，与滴灌对冬小麦生长的影响具有类似性，在灌溉大田密植型作物冬小麦方面具有较强的适用性。与滴灌相比，微润灌节水效果显著，灌水量约为滴灌的3/4，微润灌可延长冬小麦生育期约5 d，也可提高冬小麦株高、干物质质量、群体增长率、旗叶特性、产量、作物水分利用效率及灌溉水分利用效率，为确保冬小麦生长指标及产量达最优，建议实践应用中，在作物关键需水期（抽雄期、灌浆成熟期）应适当增大微润灌工作压力，从而增加灌溉水量，同时进一步提高微润灌的适用性。该结论为微润灌技术的推广及应用提供理论参考。
In order to find out the effect of micro-irrigation on the growth and water use efficiency of densely populated field crops in the field, winter wheat was selected as the research object. The experiment was conducted in a field-based randomized experiment design. Through micro-irrigation and drip irrigation (subsurface drip irrigation and surface drip irrigation) The effects of micro-irrigation on the growth, flag leaf characteristics, yield and water use efficiency of winter wheat were studied. The results showed that the plant height, dry matter weight, population growth rate, flag leaf characteristics, yield, crop water use efficiency and irrigation water use efficiency of winter wheat with micro-irrigation were higher than those without irrigation, which were similar to those of drip irrigation on the growth of winter wheat , In the field of irrigated field close planting of winter wheat has strong applicability. Compared with drip irrigation, micro-irrigation has significant water-saving effect, and the irrigation amount is about 3/4 of that of drip irrigation. Micro-irrigation can prolong the growth period of winter wheat about 5 days and improve the plant height, dry matter quality, population growth rate, Flag leaf characteristics, yield, crop water use efficiency and irrigation water use efficiency, in order to ensure that the winter wheat growth indicators and yield optimal, the recommended practice, the crop critical water requirements (tasseling, filling maturity) should be appropriately increased Micro-irrigation irrigation work pressure, thereby increasing irrigation water, while further improving the applicability of micro-irrigation. This conclusion provides a theoretical reference for the promotion and application of micro-irrigation irrigation technology.