?素???油桃采果期?体????的影?

The 7-year-old Shuguang nectarine trees were taken as the materials and studied in this experiment. In the study, the effects of potassium nutrition on tree nutrient in fruit picking period of nectarine were analyzed by changing the dosage of potassium on the basis of fixed proportion of nitrogen and phosphorus. The results showed that: In the fruit picking period, the soluble sugar and soluble starch content in leaves and shoots increased with the increasing of the potassium dosage, and were significantly higher than the antitheses. The use of potash fertilizer on nectarine was conducive to the accumulation of potassium in the organ, and with the increase in the dosage of potassium, the potassium content in organ had a corresponding increase. There were a terribly significant positive correlation between the dosage of potassium and the nitrogen content in leaves and fruit, and there were a terribly significant negative related between the dosage of potassium and the nitrogen content in shoots, calcium content in fruit, and there were a significant negative related between the dosage of potassium and the calcium and magnesium content in shoots.