褚橙果实品质指标与土壤养分状况关联分析

Correlation analysis of fruit quality index and soil nutrient status of Chu orange

褚橙作为云南省高原特色农业重要的组成部分,具有极高的食用和经济价值。为全面了解褚橙庄园土壤养分状况和果实品质指标现状,在玉溪市新平褚橙庄园内16 hm^(2)种植示范区中采集果实及0~30和30~60 cm土层的土壤,对果实品质指标和土壤理化性质进行检测分析,探究褚橙种植示范区果实营养元素与土壤养分的关联。结果表明:(1)庄园种植示范区土壤有机质、有效磷和有效铁含量适宜褚橙生长,土壤处于足硒水平;褚橙果实品质和含硒量稳定,但仍有提升空间。(2)相对30~60 cm土层而言,0~30 cm土层的营养元素含量对果实品质指标的影响更大。(3)利于提高褚橙品质的土壤锌、铁、钙含量最适范围分别是1.46~2.61,15.58~21.02、1410.94~1998.44 mg·kg^(-1)。

As an important part of the characteristic agriculture in Yunnan plateau,Chu orange has high edible and economic values.In order to fully understand the status of soil nutrients and fruit quality indicators of Chu orange orchard,samples of fruits,0~30 and 30~60 cm soil layers were collected in the 16 hectare planting demonstration area in Xinping Chu orange orchard,Yuxi city.The fruit quality indicators and soil physical and chemical properties were tested and analyzed to explore the relationship between fruit nutrients and soil nutrients in Chu orange planting demonstration area.The results showed that:(1)The contents of organic matter,available phosphorus and available iron in the soil of the orchard planting demonstration area were suitable for the growth of Chu orange,and the soil was at the sufficient selenium level.The fruit quality and selenium content of Chu orange were stable,but there was still space for improvement.(2)Compared with 30~60 cm soil layer,the contents of nutrient elements in 0~30 cm soil layer had a greater impact on fruit quality and nutrient elements.(3)The optimum range of soil Zn,Fe and Ca contents for improving the quality of Chu orange was 1.46~2.61,15.58~21.02 and 1410.94~1998.44 mg·kg^(-1),respectively.