土壤施硒
土壤施硒
盆栽试验结果表明,在本试验设定的土壤施硒范围内,魔芋叶含硒量为2。
Application of self-pressing rivet joint technique with se-mi-cavity rivets in body manufacture and the quality evaluation methods for it are introduced.介绍了半空心铆钉的自冲铆接工艺在车身制造中的应用情况及其铆接质量的评价方法。
Pot experiments were conducted with maize and soybean as test crops to study the effects of application of Se, Zn, fe on crop yields and nutritional quality.采用黄土高原低硒区典型土壤,以玉米、大豆为供试作物,研究施用硒锌铁对作物产量和营养品质的影响。