不同叶面肥对小麦生长及产量的影响

Effects of Different Foliar Fertilizers on Growth and Yield of Wheat

在小麦拔节期(2018年3月21日)和灌浆期(5月5日)喷施不同叶面肥黄腐酸、喷施宝、磷酸二氢钾、抗旱营养保苗剂,以喷清水为对照,研究其对小麦抗逆性、株高和叶面积以及产量的影响。结果表明,4种叶面肥均能显著提高小麦旗叶的脯氨酸含量、叶绿素含量和超氧化物歧化酶活性;显著降低旗叶丙二醛含量和细胞膜透性;株高与喷清水对照相比差异不显著,但叶面积差异均显著;产量显著提高。说明4种叶面肥均可改善小麦的生长状况,增强抗逆性,提高叶面积和产量。其中抗旱营养保苗剂效果最好,平均增产率为9.50%。

By spraying different foliar fertilizers(fulvic acid,Penshibao,monopotassium phosphate and drought-resistant nutrition seedling-preserving agent)in wheat jointing stage(March 21,2018)and filling stage(May 5,2018),taking spraying clear water as the control,the effects of different foliar fertilizers on the resistance,plant height,leaf area and yield of wheat were studied.The results showed that the proline,chlorophyll and superoxide dismutase activity in flag leaves of wheat greatly improved by four foliar fertilizers,the malondialdehyde content and cell membrane permeability in flag leaves decreased significantly;the plant height of wheat was not significantly different from that of the spraying clear water control,but the difference of leaf area reached the significant level;the wheat yield significantly increased.Therefore,all four kinds of foliar fertilizers can improve the growth,stress resistance,leaf area and yield of wheat.Among all the treatments,the effect of drought-resistant nutrition seedling-preserving agent is the best,and the average yield-increasing rate is 9.50%.