植物生长调节剂（组合）对南方地区淮山药产量及品质的影响

为探索不同植物生长调节剂种类及浓度对南方地区淮山药生产的影响效果,以＂桂淮2号＂淮山药为供试品种,研究矮壮素（CCC）与羟季铵·萘合剂（氯化胆碱CC＋萘乙酸NAA）对南方地区淮山药产量及品质的影响。结果表明,喷施CCC2250mg·L^-1淮山药产量最高,达到33255.15kg·ha^-1,比对照及仅喷0.15%KH2PO4处理增产15.20%和13.22%;喷施CCC2250mg·L^-1有利于提高淮山药鲜薯的干物质含量,增加淮山药块茎干样的水溶性浸出物和醇溶性浸出物含量,促进了淮山药淀粉含量的提高,并同时能维持较高的蛋白质含量,而对可溶性总糖含量影响不显著,从而保证了其具有良好的食用品质和风味。

Effects of plant growth regulators(combination)on quality and yield of Chinese yam in South China

The present experiment has been carried out to study the effects of different kinds and concentrations of plant growth regulators（combination） on quality and yield of Chinese yam（Dioscorea opposita Thunb.） in South China.The growth regulators CCC（Chlormequat Chloride） and CC（Choline Chloride）＋NAA（Naphthalene Acetic Acid） were selected in the experiment using variety Guihuai 2 as the control material.The results showed that the yield of Chinese yam treated by CCC 2250 mg/L reached the highest（33255.15 kg/ha）,which was 15.20% and 13.22% higher than that of CK and the treatment sprayed only with 0.15% KH2PO4,respectively.Spraying CCC（2250 mg/L） was helpful for raising dry matter content,yield,content of water-soluble extractive,alcohol-soluble extractive and starch of fresh tuber,and it also could maintain higher content of protein and pledge good edible quality and flavor of the tuber,while the effects on soluble sugar and taste quality was not significantly.