【作者】 王汝娟；

【导师】 史春余； 王振林；

【作者基本信息】 山东农业大学 ， 作物栽培学与耕作学， 2006， 硕士

【摘要】 本试验于2004年6月-2005年10月在山东农业大学农学实验站进行。采用池栽试验的方法,研究了不同类型甘薯产量和品质形成规律,以及不同类型钾肥对优质食用型甘薯北京553产量和品质形成的影响。主要研究结果如下:1.不同甘薯品种的产量形成和品质特性1.1不同甘薯品种的产量和品质差异鲜薯产量表现为烟251>高系14>北京553,而薯干产量表现为高系14>烟251>北京553。食用型品种烟251和北京553可溶性糖含量高于淀粉型品种高系14,淀粉和蛋白质含量食用型品种低于淀粉型品种。β-胡萝卜素桔红心品种烟251含量最高,其次是黄心品种北京553,白心品种高系14含量最低;糖蛋白含量和DHEA含量表现为高系14>北京553>烟251;Vc含量北京553 >烟251>高系14。1.2不同甘薯品种干物质积累差异淀粉型品种高系14的干物质量高于烟251和北京553。高系14和烟251干物质在地下部的分配比例较高,北京553茎、叶、柄干重占植株总干重的比例高,因而产量最低。各品种单株块根干物质变化趋势与鲜薯产量变化趋势相似。无论是干物质积累量还是鲜薯产量,烟251和高系14都高于北京553。1.3不同甘薯品种叶片生理特性差异不同类型甘薯的光合速率变化都表现为单峰曲线,北京553前期光合更多还原

【Abstract】 This experiment was carried out at the experimental station of Shandong Agricultural University from June 2004 to October 2005. The forming rule of yield and quality of different cultivars and the effect of different potassium fertilizers on Beijing 553 have been studied in pondlet culture. The main results were as follows:1. The yield and quality character of different sweet potato cultivars1.1 The difference of yield and quality among different sweet potato cultivarsThe fresh yield appeared as Y251>GX14>B553, and the dry yield appeared as GX14 > Y251 >B553. The sugar content in Y251 and B553 was higher than that in GX14. The starch and protein content, starch cultivar was higher than edible-type cultivars.β-carotene content, Y251>B553>GX14; Glycoprotein and DHEA content, GX14>B553>Y251; Vc content, B553>Y251>GX14.1.2 The difference of dry matter accumulation among different sweet potato cultivarsThe dry matter of high-starch variety GX14 was higher than edible-type varieties. GX14 and Y251, the distribution proportion of subterranean part was higher. And above-ground part percentage of B553 was higher, so it’s yield was lowest. The current of dry matter accumulation per plant of every variety was similar with the current of fresh matter accumulation. No matter dry or fresh accumulation, Y251 and GX14 were higher than B553.更多还原