有机肥替代化肥对玉露香梨生长及果实品质的影响

Effect of Organic Fertilizer Replacing Chemical Fertilizer on the Growth and Fruit Quality of Yuluxiangli

为筛选出适宜玉露香梨生长及提质的最优施肥处理,采用主成分分析的评价函数确定常规测土配方施肥处理(T_(1))、有机肥替代25%(T_(2))、50%(T_(3))、75%(T_(4))的化肥氮和单施有机肥(T_(5))5个处理对玉露香梨生长及品质指标的影响。结果表明,前2个主成分的累计贡献率达90.946%。第一主成分占70.492%的累计贡献率,可溶性糖、可溶性固形物是改善果实品质的主要指标;第二主成分(F_(2))占20.454%的累计贡献率,其中果实纵径占比最高。结合PCA综合评价,有机肥替代化肥氮50%处理果实品质综合得分最高。可见,T_(3)处理是促进玉露香梨生长及提质的最佳处理。

In order to screen the best fertilization treatment for the growth and quality improvement of Yuluxiangli.In this experiment,the evaluation function of principal component analysis was used to determine the effects of conventional soil testing formula fertilization treatment(T_(1)),organic fertilizer replacement of 25%(T_(2)),50%(T_(3)),75%(T_(4))of chemical fertilizer nitrogen and single application of organic fertilizer(T_(5))on the growth and quality of Yuluxiangli.The results showed that the cumulative contribution rate of the first two principal components reached 90.946%.The first principal component reached 70.492%of the cumulative contribution rate.Soluble sugar and soluble solids were the main indicators to improve fruit quality;The second principal component(F_(2))accounted for 20.454%of the cumulative contribution,and the vertical diameter of the fruit accounted for the highest proportion.Combined with the comprehensive evaluation of PCA,the treatment of organic fertilizer replacing 50%of chemical fertilizer nitrogen had the highest comprehensive score of fruit quality.It can be seen that T_(3)treatment is the best treatment to promote the growth and quality of Yuluxiangli.