土壤施硒对燕麦硒含量及产量的影响

Effects of selenium fertilization on the selenium content,yield and quality of oat

采用不同含硒量的硒肥进行燕麦土壤施硒的田间试验,研究硒施入量对硒在燕麦中的分布、燕麦产量、燕麦品质及硒在燕麦中存在形态的影响。结果表明：1）土壤施硒可以明显提高灌浆期和成熟期燕麦茎和籽粒中硒的含量。2）土壤中施加硒10-80mg/kg时,燕麦株高和产量均比空白组有所增加。在施硒量为40mg/kg时,燕麦株高和产量均达到最大值,分别为125.3cm和7.51kg。而后随着土壤中施加硒量的增加,燕麦株高和产量均比空白组有所下降。3）灌浆期施硒量为10-80mg/kg时,茎和籽粒中粗蛋白的含量较对照组高,而粗纤维的含量较对照降低。施硒量超过80mg/kg时,燕麦中粗蛋白和粗纤维含量较对照组未有显著变化,成熟期时,燕麦籽粒中粗蛋白和粗纤维含量高于茎中含量,变化趋势和灌浆期相同。4）富硒燕麦茎和籽粒中硒的形态分布为碱溶态〉盐溶态〉Tris-HCL态〉水溶态〉酸溶态。

Field experiment was designed to study the effect of applying selenium on the soil of oat on yield selenium content and quality of oat.The results showed that：1）Add selenium to the soil could significantly improve the total selenium content of oat.2）When the selenium content was 10-80mg/kg,the height and yield of oat compared with the control group had increased.When the selenium content was 40 mg/kg,the height and yield of oat reaches a minimum value,the height could reach 125.3cm,the yield could reach 7.51 kg.Then with the increase in concentration of selenium in soil the height and yield of oat compared with the control group had reduced.3）In grain filling stage when the selenium content was 10-80mg/kg,the crude protein of stem and grain was higher than control group content,and crude fiber in stems and seeds lower than the control.When applying agradient of more than 80mg/kg crude protein and fiber content of oats than the control group had no significant change.Crude protein and fiber content of oats in mature group were same with filling stage.4）Distribution of selenium in oat was alkali-soluble fraction〉salting soluble〉Tris-HCL soluble〉water soluble〉acid soluble.