腐植酸叶面肥对糜子产量及品质的影响

Effects of Humic Acid Foliar Fertilizer on Yield and Quality of Broomcorn Millet

以黑龙江主栽糜子品种“齐黍1号”为试验材料,采用随机设计,研究不同浓度腐植酸叶面肥(0、200、400、600、800倍液)对糜子农艺性状、产量因子、光合指标及品质指标的影响。结果表明:喷施腐植酸叶面肥可不同程度增加糜子株高、穗长、茎粗、穗重、穗粒重,提高净光合速率、蒸腾速率、籽粒中粗蛋白和粗淀粉含量,降低胞间CO_(2)浓度等,以腐植酸叶面肥600倍液表现最为显著,各指标比清水对照分别提高4.3%、12.7%、9.4%、8.5%、10.8%、14.2%、26.5%、4.5%和3.8%,胞间CO_(2)浓度降低了65.9μmol/(m^(2)·s);从而改善糜子品质,提高糜子产量,以腐植酸叶面肥600倍液增产效果最好,产量可达5099.1 kg/hm^(2),较对照显著增产7.8%。

Using“Qishu No.1”in Heilongjiang province as the test material,the effects of different concentrations of humic acid foliar fertilizer(0,200,400,600,800 times liquid)on agronomic traits,yield factors,photosynthetic and quality indexes of broomcorn millet were studied through random design.The results showed that,the application of humic acid foliar fertilizer increased plant height,ear length,stem diameter,ear weight and grain weight per ear,and increased net photosynthetic rate,transpiration rate,contents of crude protein and crude starch in grain as well,though it reduced intercellular CO_(2) concentration of broomcorn millet.The application of humic acid foliar fertilizer 600 times liquid was the most significant.Compared to the control,the above indexes were increased by 4.3%,12.7%,9.4%,8.5%,10.8%,14.2%,26.5%,4.5%and 3.8%,respectively,and the intercellular CO_(2) concentration was decreased by 65.9μmol/(m^(2)·s),which then improved the quality and increase the yield.The yield of humic acid foliar fertilizer 600 times liquid was 5099.1 kg/hm^(2),which was 7.8%higher than that of the control.