水肥耦合对黄花菜产量和品质的影响

The Combined Effect of Water and Fertilizer on Yield and Quality of Day lily

为探究宁夏扬黄灌区黄花菜适宜的水肥耦合模式,以黄花菜为供试材料,采用滴灌灌水方式,试验设计3个灌水梯度和3个水溶肥施肥梯度,组合不同灌水、施肥梯度,共设置9个试验处理。分析不同处理黄花菜的株高、花薹粗、花蕾长、花蕾粗、产量及品质等指标变化规律。结果表明:T2F2处理可显著提高黄花菜花蕾长、花蕾单重、产量、可溶性糖和V_(C)含量。利用主成分分析方法对黄花菜生长、产量和品质指标进行综合评价,T2F2处理表现最优。宁夏扬黄灌区黄花菜较优的水肥管理模式为生育期灌水10次,总灌水量3525 m^(3)/hm^(2),水溶肥施肥6次,在黄花菜萌芽出土期和展叶期分别随水施肥1次,在抽薹期和花期分别随水施肥2次,总施肥量为562.5 kg/hm^(2)。

In order to explore the suitable coupling model of water and fertilizer for day lily in Yanghuang irrigation area of Ningxia.Using day lily as test material and drip irrigation method,3 irrigation gradients and 3 water-soluble fertilizer fertilization gradients were designed,and a total of 9 experimental treatments were set up by combining different irrigation and fertilization gradients.The changes of plant height,flower moss thickness,flower bud length,flower bud thickness,yield and quality of day lily under different treatments were analyzed.The results showed that T2F2 treatment could significantly increase flower bud length,bud weight,yield,soluble sugar and V_(C) content of day lily.The growth,yield and quality indexes of day lily were evaluated by principal component analysis,and T2F2 treatment showed the best performance.The optimal water and fertilizer management mode of day lily in Yanghuang irrigation area of Ningxia was irrigated 10 times during growth period,total irrigation amount was 3525 m^(3)/hm^(2),water-soluble fertilizer was applied 6 times,fertilization was applied once with water during germination and leaf opening period,fertilization was applied twice with water during bolting period and flowering period,and the total fertilizer application amount was 562.5 kg/hm^(2).