摘要
为了验证镁肥在哈密瓜(Cucumis melo L.)上的施用效果,在常规施肥的基础上,设置处理Ⅰ(不施镁肥)、处理Ⅱ(纯镁30 kg·hm^(−2))和处理Ⅲ(纯镁60 kg·hm^(−2)),研究不同施镁水平对哈密瓜产量和品质的影响。试验结果表明:(1)随着镁肥施用量的增加,哈密瓜产量呈先增加后降低的变化趋势;处理Ⅱ哈密瓜产量最高,为72086.85 kg·hm^(−2),较处理不施镁肥增长8.81%。(2)随着镁肥施用量的增加,哈密瓜维生素C含量和糖度均呈先增加后降低的变化趋势;处理Ⅱ的哈密瓜维生素C含量和糖度较处理Ⅰ的分别增长19.63%和3.69%。(3)不同施镁水平对哈密瓜地土壤pH和养分含量的影响明显,处理Ⅱ的土壤pH、有机质、碱解氮、有效磷、速效钾、交换性钙和交换性镁含量较试验前增长2.63%、63.41%、58.76%、18.04%、64.09%、75.81%和207.71%。因此,适量施镁肥(纯镁30 kg·hm^(−2))不仅能提高哈密瓜产量和品质,还能改良土壤、培肥地力。
A field fertilizer experiment was made to analyze the effect of magnesium on the yield and quality of Hami melon(Cucumis melo L.).Hami melon was treated with no magnesium(T1),magnesium at a rate of30 kg/ha(T2)and magnesium at a rate of 60 kg/ha(T3)to observe their yield and quality.The results showed Hami melon yield higher and then lower with the increase of magnesium.Hami melon yielded the highest in the T2(4805.79 kg/ha),an 8.81%increase as compared with the T1.The contents of VC and sugar of Hami melon increased first and then decreased with the increase of magnesium,and were 19.63%and 3.69%higher than those of the T1.Application of magnesium at different rates had significant effects on the pH and nutrient contents of the soil in the Hami melon field.The pH and the contents of organic matter,alkali-hydrolyzed nitrogen,available phosphorus,available potassium,exchangeable calcium and exchangeable magnesium in the soil in the T2 increased by 2.63%,63.41%,58.76%,18.04%,64.09%,75.81%and 207.71%compared with those of the soil before the experiment.Therefore,magnesium fertilizer application at a suitable rate can improve not only the yield and quality of Hami melon,but also the soil and fertility.
作者
周运陆
张龙
陈仕迁
项再华
孙鸿蕊
符天锋
张永发
ZHOU Yunlu;ZHANG Long;CHEN Shiqian;XIANG Zaihua;SUN Hongrui;FU Tianfeng;ZHANG Yongfa(Agricultural Technology Extension Service Center of Ledong Li Autonomous County,Ledong,Hainan 572500;Rubber Research Institute,Chinese Academy of Tropical Agriculture Sciences,Haikou,Hainan 571101,China)
出处
《热带生物学报》
2022年第5期514-518,共5页
Journal of Tropical Biology
关键词
哈密瓜
镁肥
产量
品质
Hami melon
magnesium fertilizer
yield
quality
