Effect of Cultivation Measures on Watermelon Fruit Size
In order to study the effect of cultivation measures on the size of watermelon fruit,the varieties'Sumi 518'and'8424'were used as test and control materials in this study,respectively.Two experimental treatments including different pruning methods combined with different numbers of watermelon fruits,and combined with different planting densities were used in this study,watermelon fruit weight,fruit longitudinal diameter and diameter,pericarp thickness,center sugar content,and edge sugar content under different treatments were record and analyzed.The results showed that the experiment treatment of four lateral branches with different numbers of watermelon fruits did not yield the expected re-sults,two fruits per plant could get in this treatment,and there was a significant difference between these two fruits.The weight of small water-melon fruit was ranged from 2.09 kg to 2.54 kg for'Sumi 518'and 2.24-2.54 kg for'8424'.The weight of watermelon fruits could be effec-tively controlled by using high-density cultivation method.In the treatment of high-density cultivation combined with keeping two fruits per plant,there was a significant difference between big and small fruits.The small watermelon fruits had thin peels,slightly lower central sugar con-tent,and little difference in edge sugar content when comparing with big watermelon fruits.The weight of small watermelon fruits could be con-trolled within 2 kg in the treatment of three lateral branches with two watermelon fruits per plant,combined with plant spacing of 30 cm.This study explored the feasibility of regulating watermelon fruit size through cultivation measures,which has certain application value in regulating watermelon fruit size and yield in production.
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