优质小果型西瓜区域性品种比较试验

Comparative Experiment of Small Fruit Watermelon Variety

为了适应北京地区西瓜生产需求，根据本地西瓜生产特点，引进4个日本优质小果型西瓜品种与‘京秀’开展品种对比研究。结果表明：‘CX11’综合生长指标较均衡，植株高度、叶面积和茎粗度分别为211 cm、394 cm2和9.44 mm，植株整体长势‘CX21-1’＞‘CX21’＞‘CX11’＞‘L555’＞‘京秀’。各品种商品果率均在95%~97%区间内，极易坐果。‘CX21-1’、‘L555’和‘CX11’单位面积产量表现较好，667 m2分别达到3091、3037、3011 kg，3品种间差异不显著。果皮厚度‘CX21’最薄，仅为0.46 cm，‘L555’最厚为0.72 cm。可溶性固形物含量‘L555’最高，中心和边部分别为11.74%和9.78%，各品种间差异均不显著，整体水平较优异。‘CX11’口感最优，口感酥脆，纤维含量极少。综合比较发现，’CX11’和’L555’在产量和品种方面表现优异，适合作为本地区高产优质新品种进行大面积推广；‘CX21-1’可用作市场批发。‘京秀’和‘CX21’由于产量不佳，不适宜在本地区早春大棚生产。

In order to meet the needs of watermelon production in Beijing area, we tested the Japanese small fruit watermel-on varieties under local cultivation. The results showed that：the growth of‘CX11’was relatively balanced. Its plant height, leaf area and stem diameter were 211 cm,394 cm2 and 9.44 mm,respectively. The order of the growth potential was‘CX21-1’＆gt;‘CX21’＆gt;‘CX11’＆gt;‘L555’＆gt;Jingxiu. The marketable yield of the varieties were 95%-97%and they were easy for set-ting fruit. The yield of‘CX21-1’‘L555’and‘CX11’reached to 3 091 kg per 667 m2,3 037 kg per 667 m2 and 3 037 kg per 667 m2,respectively. The skin thickness of‘CX21’is only 0.46 cm,L555’has the highest soluble solids content in cen-ter and edge,11.74% and 9.78% respectively. CX11’and‘L555’performed better in terms of yield and are suitable for large scale trial.‘CX21-1 can be produced for wholesale market. Jingxiu and‘CX21’are not suitable for production in ear-ly spring greenhouse in this area.