Biomass and mineral elements accumulation characteristics of Orah on Ziyang Xiangcheng rootstock in Nanning during high production period
By studying the regulation of mineral elements accumulation and nutrient distribution in the tree during fruit ripening,the demand for mineral nutrients from tree can be clarified,providing scientific basis for'determining fertilizer based on fruit'and achieving digital management of nutrients.In a well managed and high-yield Orah orchard in Nanning,three 5-year-old Orah/Ziyang Xiangcheng plants were randomly selected during the fruit ripening period for anatomical sampling to determine and analyze the biomass and mineral elements of different organs.The results showed that the average fresh fruit yield of single plant was 75.90 kg,accounting for 63.88%of the total fresh weight of plant.The dry weight of roots,branches,leaves,and fruits accounted for 13.31%,39.23%,13.74%,and 33.72%of the total dry weight of plants,respectively.In terms of the content of the same element in different plant organs(measured by dry mass),the content of N,Ca,Mg,S,Mn,Cu,Zn,and B was the highest in leaves,the content of P and Fe was the highest in roots,and the content of K was the highest in fruits.Based on a fruit yield of 50 kg per plant,the amount of N,P,K,Ca,Mg,S,Fe,Mn,Cu,Zn,and B taking away by the harvest of fruit was 80.84 g,8.29 g,72.91 g,30.79 g,4.82 g,3.50 g,218.75 mg,35.21 mg,41.87mg,35.99 mg,and 91.42 mg,respectively,accounting for 31.36%,38.96%,57.87%,9.04%,31.74%,22.20%,12.99%,14.64%,15.07%,25.78%,and 19.03%of the total amount of corresponding element in the tree,respectively.The study has revealed the nutrient carrying capacity and nutrient distribution coefficient of the Orah fruit,which can provide a basis for nutrient demand decision-making and optimizing fertilization for Orah.
万方数据
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