不同氮磷钾镁配比对砀山酥梨生长和养分吸收的影响

Effects of different ratios of N, p, K and MG on growth and nutrient absorption of Dangshan county pear

文章旨在探讨不同氮磷钾镁配比对砀山县酥梨的生长及营养物质吸收的影响。试验结果表明:在氮磷钾镁含量相同的条件下,不同配比对酥梨株高、枝数、叶面积、花芽形成率、果实发育情况及果实品质都有显著影响;不同配比对植株根系长度、干重、总糖含量、酸度、果汁含水量、果粒质量有明显差异;不同配比对土壤中有机质、矿质元素含量也有明显变化。其中,氮磷钾镁为1:2:1的比例下,酥梨株高最高,产量最大;氮磷钾镁为2:3:1的比例下,酥梨株高最低,但产量也较大;氮磷钾镁比例为1:4:0的比例下,酥梨株高最小,但果实品质最好。因此,建议在砀山县栽培酥梨时,应根据当地气候条件、肥料供应状况等综合因素来合理选择氮磷钾镁配比,以提高酥梨的经济效益。

This study was conducted to investigate the effects of different ratios of N,P,K and Mg on the growth and nutrient absorption of Dangshan County pear.The results showed that the plant height,branch number,leaf area,flower bud formation rate,fruit development and fruit quality were significantly affected by different ratios under the same content of N,P,K and Mg The root length,dry weight,total sugar content,acidity,water content of fruit juice and fruit quality were significantly different in different proportion The contents of organic matter and mineral elements in soil also changed obviously with different ratios.Under the ratio of 1:2:1 of N,P,K and Mg,Su Pear had the highest plant height and the highest yield,while under the ratio of 2:3:1 of N,P,K and Mg,Su Pear had the lowest plant height and the highest yield When the ratio of N,P,K and Mg was 1:4:0,the plant height of su pear was the smallest,but the fruit quality was the best.Therefore,it is suggested that the optimum ratio of N,P,K and Mg should be selected according to the local climate and fertilizer supply in order to improve the economic benefit of su pears in Dangshan County.