“桂裕”牌育苗营养基质对西瓜生长的影响

为推广“桂裕”专用型育苗营养基质在西瓜育苗上的应用，于2011年研究3种基质对西瓜苗期生长及产量和品种的影响。结果表明，“桂裕”基质处理的各项指标均优于山东和习惯处理，（1）茎粗：桂裕处理在嫁接前为3.26 mm，比山东处理粗2.11%和极显著比习惯粗12.03%，移栽期茎粗为4.97 mm仍比山东处理粗2.26%和显著比习惯粗9.23%；（2）一级侧根数：桂裕、山东和习惯分别为9条/株、8条/株、7条/株；（3）主根长：桂裕处理为8.6 cm，分别比山东和习惯长0.7 cm和1.0 cm；（4）单瓜重：桂裕处理为5.46 kg，显著比山东和习惯的重5.60%；（5）产量：桂裕处理达32825 kg/hm2，分别比山东和习惯的增产6.06%和11.08%；（6）纯收入：桂裕处理为33390元/hm2，分别比山东和习惯多2295元/hm2和3855元/hm2；（7）糖度：桂裕处理为11.8°与其他处理相当。因此，“桂裕”育苗营养基质可以作为西瓜的育苗基质进行推广应用，且幼苗的茎粗、一级侧根数及主根长可作为评判移栽后西瓜产量的指标。

Effect of “Guiyu” Medium of Raising Seedling on Watermelon Growth

In order to determine whether Guiyu medium of raising seedling can be used as nursery media for watermelon. A greenhouse nursery and a field experiment were conducted comparing with the other two media in terms of seedling characters, fruit yield and TSS （total soluble solids） of watermelon in 2011. The result showed that the growth and economic traits indiced of Guiyu treatment were obvious higher than the others, including： （1）stem diameter： Guiyu treatment was 3.26 mm before grafting, which was by 2.11% higher than Shandong and significant at 0.01 level by 12.03% higher than conventional treatment（CK）, and Guiyu ＇ s was 4.97 mm during transplanting which was still by 2.26% higher than Shandong and significant at 0.05 level by 9.23% higher than CK; （2）number of lateral branch root： the number of individual plant of Guiyu, Shandong and CK were 9, 8 and 7 respectively; （3）taproot length： Guiyu ＇ s was 8.6 cm and longer than Shandong and CK by 0.7 cm and 1.0 cm respectively; （4）weight of single melon： Guiyu ＇ s was 5.46 kg which was significant heavier than Shandong and CK by 5.60%; （5）fruit yield： Guiyu ＇ s was 32825 kg/hm 2 which increased by 6.06% and 11.08% than Shandong and CK respectively; （6）net income： Guiyu ＇ s was 33390 yuan/hm 2 and increased than Shandong and CK by 2295 yuan/hm 2 and 3855 yuan/hm 2 respectively; （7）TSS： Guiyu ＇ s was 11.8° and was not different with the others. Thus, Guiyu could be popularized in production, and stem diameter, taproot length and number of lateral branch root could be considered as referential indices to estimate the fruit yield after transplanting.