有机硒对马铃薯生理生化指标、品质及产量的影响
Heilongjiang Agricultural Sciences（2021）
Abstract
为筛选马铃薯喷施有机硒最佳用量,本文采用田间试验方法,研究不同有机硒喷施量下,马铃薯生理生化指标、品质指标及产量的变化.结果表明:有机硒用量为6.0 L·hm-2时,马铃薯叶片中可溶性糖含量(0.63μg·g-1)、SOD(142.62 U·mg-1)、POD(123.03 U·mg-1)、CAT均达到最高值,丙二醛(MDA)含量达到最小,低于对照30.95％,差异极显著(P<0.01),同时块茎中淀粉含量与薯块蛋白也显著高于对照.马铃薯淀粉含量变化随着有机硒用量的增加呈现出先增加后降低再增加的趋势,喷施有机硒能够显著提高马铃薯块茎中淀粉含量以及薯块蛋白含量.有机硒喷施量为6.0 L·hm-2的处理马铃薯产量最高,经方程后拟合有机硒营养液喷施浓度为5.62 L·hm-2时理论产量最高.薯块硒含量随喷施量增加而升高,富硒效果显著.综合来看,当有机硒用量为6.0 L·hm-2时,可有效促进马铃薯产量和品质的提高.
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