To investigate the effect of irrigation amount on the quality of citrus under rainproof cultivation,'Xingjin Early Growing'citrus was used as the experimental material.Four treatments were set up for comparative experiments,namely,30 L/(plant·time)for non rainproof cultivation(treatment 1),30 L/(plant·time)for rainproof cultivation(treatment 2),35 L/(plant·time)for non rainproof cultiva-tion(treatment 3),and 35 L/(plant·time)for rainproof cultivation(treatment 4).The results showed that the fruit quality was the best under treatment 2,with flesh weight,soluble solid content,vitamin C content,reducing sugar content,and total acid content of 45.27g,12.07%,550.66mg/kg,50.67mg/kg,and 1.47 g/kg,respectively.At the same time,the content of soluble solids and vitamin C in the fruit of 30 L/(plant·time)irrigation increased by 7.33%and 20.47%,respectively,compared with 35 L/(plant·time)irrigation;the soluble solid content,vitamin C content and reducing sugar content of citrus grown in rainproof cultivation environment were significantly higher than those in non rainproof cul-tivation environment.The best effect of improving the quality of citrus was when the amount of irrigation under rainproof cultivation was 30 L/(plant·time).
rainproof cultivationquality of citrusirrigation amountroot domain irrigation
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