潮汐灌溉在番茄育苗上的应用研究

Study on the application of ebb and flow irrigation for tomato seedlings

为了筛选番茄潮汐灌溉育苗技术适宜参数,以瓯秀201为试材,采用L9(33)正交试验设计,研究了潮汐灌溉和顶部洒水灌溉2种方式下的番茄生长发育变化和灌溉指标。结果表明,与顶部洒水灌溉方式相比,潮汐灌溉可节水34.1%~77.0%。在试验所设的3个处理因素中,对番茄植株地上部生长及耗水量起主要作用的是灌溉高度,对番茄地下部生长起主要作用的是浸盘时间,而对番茄植株的光合生理起主要影响的是灌溉频率。综合来看,灌水高度2.0 cm,浸盘时间1.5 h,灌溉频率为每3 d一次的组合可以作为番茄潮汐灌溉育苗技术的适宜参数。

In order to screen the suitable parameters of ebb and flow irrigation for tomato seedlings,the L9( 33) orthogonal experimental was designed using tomato variety Ouxiu201. The growth and physiological changes and the irrigation index of tomato were analyzed under the top sprinkling irrigation and ebb and flow irrigation. The results showed that compared with the top sprinkling irrigation,ebb and flow irrigation could save water 34. 1%-77. 0%.Irrigation height was the most important factor affecting the growth of upper tomato plants and water consumption,while dipping time played a major role in the growth of underground part of tomato plants,and the irrigation frequency was the major role affecting photosynthetic physiology of tomato,under the 3 treatment factors set in the test. In summary,the irrigation height of 2. 0 cm,dipping time of 1. 5 h,the irrigation frequency of once every 3 days combination can be used as appropriate parameters of the tomato ebb and flow irrigation.