摘要
本试验以7年生曙光油桃为材料,在固定氮磷比例的基础上,通过改变钾肥用量,分析了钾素营养对油桃产量和品质的影响。结果表明:在各供钾水平下,N:336 kg/hm2+P2O5:168 kg/hm2+K2O:504 kg/hm2最有利提高果实品质,与对照相比,其果实可溶性固形物、可溶性糖、维生素C和糖酸比增幅分别为49.84%、9.77%、39.9 2%和68.77%。而且油桃单位面积产量(37287.12 kg/hm2)、增产值(18 596.69元/hm2)以及产投比(3.55)都最大,与反施氮磷肥相比,其增幅分别为17.06%、271.14%和42%。
The 7-year-old Shuguang nectarine trees taken as the materials were studied in this experiment.In the study,by changing the dosage of potassium on the basis of fixed proportion of nitrogen and phosphorus,the effects of potassium nutrition on the yield and quality of nectarine were analyzed.The results showed that： in all the treatments of potassium,the ratio（N：336 kg/hm2 ＋P2O5：168 kg/hm2 ＋K2O：504 kg/hm2）was the most beneficial to improve the intrinsic quality.Compared with the antitheses,it had respectively increased the fruit soluble solids,soluble sugar,Vc and sugar acid ratio 49.84 %,9.77 %,39.92 % and 68.77 %.In all the treatments of potassium,the nectarine yield per unit（37 287.12 kg/hm2） and increased production value（18 596.69 yuan/hm2）,or the value cost ratio（3.55）,were the largest （N：336 kg/hm2 ＋P2O5：168 kg/hm2 ＋K2O：504 kg/hm2）.Compared with N：336 kg/hm2 ＋P2O5：168 kg/hm2,the yield per unit,increased production value and value cost ratio of N：336 kg/hm2＋P2O5：168 kg/hm2 ＋K2O：504 kg/hm2 were increased by 17.06 %,271.14 % and 42 %,respectively.
出处
《西南农业学报》
CSCD
北大核心
2010年第4期1173-1176,共4页
Southwest China Journal of Agricultural Sciences
基金
四川省财政育种工程青年基金项目(2009QNJJ-014)
国家桃产业技术体系(nycytx-31-zs-10)
公益性行业(农业)科研专项专项(3-37)
关键词
钾
油桃
产量
品质
Potassium
Nectarine
Yield
Quality
