复合肥中应用不同比例风化煤及其碱提腐植酸对冬小麦生长和产量的影响

The Application of Different Proportion of Weathered Coal and Humic Acid Extracted by Alkali in the Compound Fertilizer and Its Effect on the Growth and Yield of Winter Wheat

通过大田试验,研究了在复合肥(18-18-18)中添加不同比例的风化煤和从该风化煤中碱提取的腐植酸对冬小麦生长和产量的影响。结果显示,在复合肥中添加腐植酸有利于冬小麦株高、地上鲜重、根重、分蘖数、穗数、穗粒数及产量的改善。添加风化煤和碱提腐植酸的处理冬小麦产量较对照平均提高7.3%。风化煤和碱提腐植酸搭配施用效果优于单一施用,尤以风化煤和碱提腐植酸比例为3∶7效果最佳,分别较单一添加风化煤和碱提腐植酸冬小麦产量提高了11.1%和5.6%。

The effect of adding different proportion of weathered coal and humic acid extracted by alkali from the weathered coal in the compound fertilizer(18-18-18)on the growth and yield of winter wheat was studied by field experiment.The results showed that adding humic acid to the compound fertilizer was beneficial to the improvement of plant height,fresh weight of the overground part,root weight,tiller number,spike number,kernels per spike and yield of winter wheat.Compared with the control group,the yield of winter wheat treated with weathered coal and humic acid extracted by alkali increased by 7.3%on average.The efficiency of the mixed-use of weathered coal and humic acid extracted by alkali was better than those in the single using of either of them.The optimum fertilizer proportion of weathered coal to humic acid extracted by alkali was 3:7,which increased the yield of winter wheat by 11.1%and 5.6%respectively,compared with only adding weathered coal and humic acid extracted by alkali.