化肥减量条件下水溶肥对大棚芦笋 产量和品质的影响

为了解化肥减量条件下水溶肥对大棚芦笋产量及品质的影响,以常规肥料为对照,在化肥总养分减少的情况下,开展腐植酸水溶性肥料应用效果试验研究。试验结果表明,在常规化肥减量30%、50%的条件下,大棚芦笋施用腐植酸水溶性肥料可提高芦笋嫩茎长度、单根质量、茎粗及嫩茎成长度(散头情况)等商品性;能有效改善芦笋品质,芦笋嫩茎中维生素C含量提高,硝酸盐含量降低;能提高嫩茎产量,产量较常规施肥对照增加172.2、281.2kg/667m2,增长率分别为10.3%、16.8%。

Effects of Water-soluble Fertilizer on Yield and Quality of Asparagus in Greenhouse in Condition of Chemical Fertilizer Reduction

In order to understand the effects of water-soluble fertilizer on the yield and quality of Asparagus in greenhouse in the condition of chemical fertilizer reduction, an experimental study on the application effect of humic acid water-soluble fertilizer was carried out with conventional fertilizer as the control in the condition of reducing total nutrients of chemical fertilizer. The experimental results indicated that in the condition of the dosage of conventional fertilizer reduced by 30% and 50%, the application of humic acid water-soluble fertilizer in greenhouse could improve the commercial properties of asparagus, such as length, single root weight, stem diameter and tender stem growth (under loose situation), and it could effectively improve the quality of asparagus, in addition, increase vitamin C content and decrease nitrate content in asparagus tender stem. Moreover, it could increase the yield of tender stems, and the yield increased by 172.2 and 281.2 kg/667 m2 compared to that of conventional fertilization treatment, with an increase of 10.3% and 16.8%, respectively.