微纳米加气灌溉对温室番茄生长、产量和品质的影响

为了探究微纳米加气灌溉对番茄的影响,采用温室小区试验,选择不同的水分控制下限条件,研究了其对番茄生长发育、产量、品质的影响。结果表明,微纳米加气灌溉模式下番茄株高、茎粗、单株叶面积增长速度较常规灌溉得到显著提高,表现为苗期、开花期、坐果期番茄生长优势明显,生长后期增长速度近似相同。基于番茄产量和灌溉水利用效率2个指标条件,微纳米加气灌溉较常规灌溉增长效果更好。微纳米加气灌溉改变番茄产量分布特征,促进番茄提早成熟从而获得更大的经济效益。微纳米加气灌溉对番茄VC量、可溶性固形物和蛋白质均有不同程度提高,有机酸呈降低趋势,对糖酸比的影响不大。综合认为,微纳米加气灌溉应用在温室番茄种植是可行的。

Aerating Irrigation with Mixed Nano-micro Air Bubbles Increases Growth,Yield and Quality of Greenhouse Tomato

Reduction in soil air permeability could result in an anaerobic root zoon, thereby detrimentally affect-ing plant growth and yield. To investigate the efficacy of irrigation with mixed nano-micro air bubbles in aerating soil and the consequent impact on growth, yield and fruit quality of tomato, we conducted plot experiments under different soil moistures in a greenhouse. The results showed that the growth rate of the plant height, stem diame-ter and leaf area of the tomato irrigated with the air bubbles was significantly faster than those under conventional irrigation at the seedling, flowering and fruit setting stages. Aerating irrigation with air bubbles improved tomato yield and water use efficiency compared with conventional irrigation. Moreover, it also led to early ripeness, a sig-nificant increase in the contents of VC, soluble solids and protein, but a decrease in the content of organic acids. Sugar-acid ratio under aerating and conventional irrigations was almost the same.