加氧灌溉下温室甜瓜生长、品质和产量特征研究

The Growth, Quality and Yield of Muskmelon under Oxygation in Greenhouse

为了了解土壤加氧对温室覆膜甜瓜生长、品质和产量的影响,采用5个加氧频率处理,即不通气(T1)处理、2次/d(T2)处理、1次/d(T3)处理、1次/2 d(T4)处理和1次/3 d(T5)处理,分析了不同加氧频率对温室甜瓜根系生长、光合特性、果实品质、作物产量和水分利用效率的影响。结果表明,加氧灌溉处理的根系生长特征、叶片光合、果实品质、产量和水分利用效率均高于T1处理,T2处理与T3处理的主根长、可溶性总糖质量分数和单果质量差异不显著,T3处理与T5处理的根体积、根系活力以及果实中可溶性总糖、可溶性固形物的质量分数差异不显著,T4处理对提高作物的主根长、增加叶片光合速率、提高果实中可溶性总糖、Vc和有机酸的质量分数以及增进作物的产量和水分利用效率产生积极的影响。加氧频率为1次/2 d是温室覆膜甜瓜的最优加氧处理。

This paper studied the impact of aeration irrigation on growth, yield and quality of muskmelon grown in a greenhouse. Five oxygations were examined： irrigation without oxygen （T1）, irrigating with oxygen twice per day （T2）, irrigation with oxygen once per day （T3）, irrigation with oxygen once per two days （T4）, and irrigating with oxygen once per three days （TS）. The results showed that compared with the control T1, oxygation promoted root growth, leaf photosynthesis, fruit quality and yield, as well as water use efficiency. There were no significant differences in the main root length, soluble sugar content and single fruit weight between T2 and T3. The root volume, the root activity, the mass fraction of total soluble sugar and solid content in fruit are comparable between T3 and TS. The T4 gave the best main root length, photosynthetic rate, soluble sugar content, Vc content, organic acid content, yield and water use efficiency, and is hence the best oxygation for the greenhouse muskmelon.