[Objective]To explore the effects of soil nutrients on fruit quality of Jiuquan Zaosu red pear orchard,and put forward the optimization scheme of soil nutrients suitable for the production of high-quality Zaosu red pear,so as to provide scientific theoretical reference for the high-quality development of Zaosu red pear.[Method]The fruit quality and soil nutrients of Zaosu red pear in Suzhou District and Dunhuang city of Jiuquan city were determined.The main soil nutrient factors affecting the fruit quality of Zaosu red pear were screened out by descriptive statistical analysis,correlation analysis and linear regression analysis.By establishing a linear programming equation for the relationship between fruit quality and soil nutrients,the optimal soil nutrient optimization scheme for Zaosu red pear fruit was obtained.[Result]The soil characteristics of Jiuquan Zaosu red pear orchard were alkaline,the content of organic matter and alkali-hydrolyzable nitrogen was low,the content of available phosphorus and available potassium was in the middle level,the content of exchangeable calcium and exchangeable magnesium was high,the soil fertility coefficient was 1.18,and the soil fertility grade was three,which belong to the general level.Through correlation analysis and regression analysis,the main soil nutrient factors affecting the fruit quality of Zaosu red pear were screened out as organic matter,available phosphorus and available potassium.The soil optimization scheme for the optimal quality of Zaosu red pear was obtained by establishing linear programming equations:soil organic matter content was 21.44 g/kg,available nitrogen was 43.96-44.46 mg/kg,available phosphorus was 30.86-55.99 mg/kg,available potassium was 105.67 mg/kg,exchangeable calcium was 11.68-13.29 g/kg,exchangeable magnesium was 0.77-1.38 g/kg.[Conclusion]In the management of Jiuquan Zaosu red pear orchard,according to the actual situation,improve the soil salinity,increase the application of organic fertilizer,timely and appropriate application of nitrogen,phosphorus and potassium fertilizer,reduce calcium and magnesium fertilizer,to achieve scientific formula fertilization technical standards,in order to achieve the sustainable development goal of high yield,high quality and high efficiency of Zaosu red pear.
Zaosu red pearfruit qualitysoil nutrientsmultivariate analysisoptimum proposals
NETL
NSTL
万方数据
