摘要
采用三因素二次正交旋转回归设计,通过盆栽试验研究了2,4-D,氮肥,多效唑对小麦光合作用的影响。探讨了除草剂,氮肥,植物生长调节剂之间混用的关系。结果表明:3者混用可提高氮肥的肥效,特别是多效唑对氮肥肥效的发挥起促进作用,3者混用对小麦的安全性没有太大影响。多效唑可以调节气孔导度,降低蒸腾强度,提高小麦抗逆性。2,4-D对小麦的影响呈一元二次抛物线,与氮肥混用对小麦略有不利影响但不显著,但其副作用小于多效唑与氮肥混用的正交互作用。得出小麦田2,4-D、氮肥、多效唑的合理施用浓度范围分别是75～105mL/667m2、16～22.5kg/667m2、155～225g/667m2。
This paper,by adopting triple factors orthogonal regression rotational combination design, by pot experiments, studied the wheats physiological effects. Explored the interrelationship among the herbicide, carbamide and plant growth regulator. The results showed that：the combined application of 2,4 - D, carbamide and MET can promote the performance of carbamide. Especially the MET could promote the efficacy of the carbamide. There were no poisonous effects at the wheat when 2,4 - D, carbamide and MET were mixed. The MET could adjust the leaf stoma, reduce the rise of steam, enhance the wheat drought resistantance. The 2,4 - D influence the wheat showed unitary quadratic curve, it promote grow at lower consistency, it restrain grow at higher consistency. 2,4 -D mixed with the carbamide were harmful to the wheat, but the effect was smaller than which MET mixed with the carbamide. The paper showed the best using quantity at the field ：2,4 - D （ 75 - 105ml/667m^2 ）, carbamide （ 16 - 22.5kg/667m^2 ）, MET （ 155 - 225g/667m^2 ）.
作者简介
任建跃，男，汉，1961年生，山西沁源人，会计师
