不同截干高度对香椿芽菜产量和商品性状的影响

 以2年生香椿Toona sinensis实生苗为材料，研究了不同截干高度对香椿芽菜的产量、感官品质、营养成分质量分数等的影响效果。结果表明：①0，20，40，60，80 cm截干处理下，顶芽的感官品质差异不显著，侧芽的感官品质存在极显著差异（P＜0.01）；顶芽的可溶性糖、可溶性蛋白质和游离氨基酸质量分数均存在极显著差异（P＜0.01），顶芽的产量、维生素C质量分数存在显著差异（P＜0.05）；侧芽的可溶性糖、维生素C和游离氨基酸质量分数存在极显著差异（P＜0.01），侧芽的产量及可溶性蛋白质质量分数存在显著差异（P＜0.05）。②从提高芽菜产量和感官品质考虑，60 cm截干效果最好，顶芽的感官品质最佳，芽菜产量比最差的0 cm截干高22.3%。③顶芽的产量、感官品质和营养成分均比侧芽高，生产中应重点考虑顶芽的商品性状指标；0和20 cm截干，顶芽的可溶性糖和维生素C质量分数相对较高；60 cm和80 cm截干，顶芽的可溶性蛋白质和游离氨基酸相对较高。图3参18

Different stump heights with Toona sinensis bud vegetable yield and commodity characteristics with field coppice management

As a Chinese traditional food，Toona sinensis bud vegetable has rich nutrition and much benefit for human body health. Stump is a important method to improve Toona sinensis bud vegetable yield and actualize dwarf and close planting. Up to now，the problem of which is the best stump height for high vegetable yield and good commodity character is not resolved. This paper combined with Toona sinensis low production forest improvement project in Taixing City of Jiangsu Provence in China，objective to provide scientific evidence and reference for Toona sinensis high yeild cultivation. Using two-year-old Toona sinensis seedlings，the effects of different stump heights （0，20，40，60，and 80 cm） on bud vegetable yield and commodity characteristics with field coppice management were studied. Experimental design was one singel factor random repeated test（three times repeated，one repeat used fifty per plant）. Results with stumped seedlings showed （1） significant differences （P＜0.05） for both terminal bud and lateral bud vegetable yield when compared to content of soluble sugars，soluble proteins，vitamin C，and amino acids. Also，sensory quality of the lateral bud had significant differences （P = 0.004），but the terminal bud did not （P = 0.211）. （2） For high bud vegetable yield and sensory quality，the 60 cm stump height treatment was best with a 22.3% greater yield than the 0 cm stump height. （3） Considering terminal bud vegetable nutritional components，the 0 and 20 cm stump height treatments had mostly higher soluble sugar content and vitamin C conten；whereas the 60 and 80 cm stump height treatments had higher soluble protein content and amino acid content.［Ch，3 fig. 18 ref.］