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以“渝苏紫43”等3个品种为材料,采用4种遮荫处理,并于栽后不同时间挖根测定块根鲜质量及花色苷含量,研究遮荫对紫肉甘薯块根鲜质量、花色苷含量及产量的影响.结果表明,不同品种栽后153 d,单层遮荫处理使块根鲜质量降低23.33%~76%,块根花色苷含量提高32.72%~49.07%,块根花色苷产量降低32.74%~66.28%;双层遮荫整体上增强了单层遮荫的效果.因此,紫肉甘薯最适宜净作.单层或双层遮荫时,“渝苏紫43”或“渝紫263”鲜薯或花色苷产量最高.在“麦-玉-苕”耕作制度下,以收获鲜薯为目的,“渝紫263”较适与玉米等作物套作,“渝苏紫43”次之;以获得花色苷为目的,“渝苏紫43”较适,“渝紫263”次之.遮荫处理对块根鲜质量和花色苷含量的影响主要表现在生长前期(栽后1~25 d).
In order to study the fresh mass and anthocyanin content of roots and tubers in three varieties of “YuSuZi 43”, four kinds of shading treatments were used, and root fresh weight and anthocyanin content were determined at different time after planting. , Anthocyanin content and yield.The results showed that single layer shading treatment decreased the fresh mass of roots by 23.33% -76% and the anthocyanin content increased by 32.72% -49.07% in 153 days after transplanting, the anthocyanin yield Reduce 32.74% ~ 66.28%; double shading on the whole to enhance the effect of a single shade, therefore, purple sweet potato most suitable for net.When single or double shading, “Yu Suzuki 43 ” or The yield of fresh potato or anthocyanin was the highest in “Yu Zi 263”. Under the system of “wheat-jade-苕” tillage, the purpose of harvesting fresh potatoes was “Yuzhong 263” For the purposes of obtaining anthocyanins, “YuSuZi 43” is more suitable, and “YuZi 263 ” is the second.Shade quality and color of fresh roots The effect of glycosides mainly in the early growth stage (1 ~ 25 days after planting).