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以移栽3年的人工栽培白鲜为试材,采用常规方法测定不同生长时期内白鲜全株氮、磷、钾养分含量并分析其变化规律,研究白鲜对氮、磷、钾的吸收特点。结果表明:在通化地区,生长季内氮、磷、钾的吸收量N∶P2O5∶K2O=7.8∶1.0∶5.8。5月初至7月上旬白鲜对氮、磷、钾吸收量均呈上升趋势,钾在7月6日,氮在7月21日达全年吸收量高峰;氮、钾在峰值后吸收量下降,而磷在9月4日达全年吸收量高峰。三元素的吸收量,枯萎期均高于萌动期。建议生产中,可春季整地和7月上旬前追肥。
The three-year-old artificial cultivation of fresh white as the test material, using conventional methods to determine the different growth stages of white fresh N, P and K nutrient content and analysis of its variation, the fresh white on the absorption of nitrogen, phosphorus and potassium. The results showed that the absorption of N, P, K in the growing season was between 7: 8: 1. 0: 5. 8.5: The absorption of nitrogen, phosphorus and potassium in fresh white rose from early May to early July , Potassium on July 6, nitrogen in the July 21 up to the peak annual absorption; nitrogen and potassium decreased after the peak absorption, and phosphorus in the September 4 up to the peak annual absorption. Three elements of absorption, withered period were higher than the germination period. Recommended production, spring planting and top dressing before early July.