Abstract:

In order to screen small watermelon varieties suitable for open field cultivation in Dezhou, the tested watermelon varieties were compared in terms of seedling emergence rate, survival rate, growth potential, disease resistance, fruit traits and quality, and yield. The results showed that ZXH had a high emergence rate and survival rate of colonization, which were above 90%, the fruit development period was 28 days, the growth vigor was the strongest, the disease incidence was the lowest of 3.3%, the gradient difference between central sugar and edge sugar content was the smallest, and the whole sugar content was the highest, single melon weight, plot yield and equivalent 667 m² yield were the highest. The emergence rate of ZT2693-11 was a little lower, but the survival rate of colonization was higher, the growth vigor was stronger, the incidence of disease was lower, the fruit development period was the shortest with only 26 days, the fruit peel was thin, the fruit was short and oval, the content of central sugar was 10.20%, the content of edge sugar was 9.00% with good quality and high yield. In summary, ZXH and Zt2693-11 are suitable for growing in Dezhou.

Key words: watermelon, small, open field, comparative experiment