海水灌溉对甜瓜生长及果实品质的影响

Effects of Seawater Irrigation on Growth and Fruit Quality of Muskmelon

【目的】研究不同浓度海水对甜瓜生长、产量和品质的影响,筛选出适合甜瓜种植的最佳海水浓度,为利用海水资源提供有力证据。【方法】采用浓度0%(CK)、10%、20%、30%、40%、50%的海水对甜瓜进行灌溉,研究不同浓度海水对甜瓜生长指标和品质指标的影响。【结果】10%以下浓度海水胁迫可以促进甜瓜植株株高和叶面积的增加,40%以下海水浓度可促进叶绿素含量增加。甜瓜果实可溶性糖含量、中心固形物和蛋白含量随海水浓度的增加为先上升后下降的变化趋势,而茎粗、纵横径、产量、边缘固形物和VC含量则随着海水浓度的增加而降低,浓度越高抑制作用越明显。【结论】海水胁迫增加甜瓜果实的含糖量和蛋白含量,改善甜瓜的口感提高品质,在海水浓度10%~20%下种植甜瓜可保障产量,30%浓度海水处理品质最佳。

[Objective] The aim was to study the effects of different concentrations of sea water on the growth, yield and quality of muskmelon and screen out the best concentration of seawater that will be suitable for muskmelon cultivation thus providing strong evidence for the utilization of seawater resources.[Method] U- sing concentrations 0% （CK） , 10% , 2 0 % , 30 % , 4 0 % and 5 0 % of seawater irrigation on muskmelon to re-search the effects on growth index and quality index of muskmelon.[Result] The results showed that seawater below 10% concentrations could increase plant height and leaf area of muskmelon, seawater below 4 0 % con-centrations could promote chlorophyll content increase. The soluble sugar content, central solid content and protein content of melon fruit increased first and then decreased with the increase of seawater concentration and the trend was to rise first and then fall. And stem diameter, vertical and horizontal diameter, yield, marginal solid and Vc content decreased with the increase of seawater concentration decreased. The higher concentra-tion of seawater, the more obvious the inhibitory ef fect .[Conclusion] Comprehensive analysis concludes that salt stress increased the content of sugar and protein in melon fruit, improved the taste and quality of melon. Under the seawater concentration of 10% - 20 % , muskmelons yield could be ensured, and the treatment with 30% concentration of seawater had the best quality.