灌漠土施钾对板蓝根的影响研究

在河西走廊速效钾含量为113 mg/kg的灌漠土上进行了板蓝根施钾的田间肥效试验,结果表明,在氮、磷肥施用量相同的条件下,板蓝根主要经济性状以及产量均随K2O施量的增加而增加,当K2O施量达到360kg/hm2时,产量又呈递减趋势。以K2O施量为360 kg/hm2时产量最高,为8 456.25 kg/hm2,较对照增产50.25%。经对产量进行回归分析,最佳经济效益施K2O量为365 kg/hm2,此时理论产量为8 520.00 kg/hm2,纯利润为6.90万元/hm2。

Study on the Effect of Potassium Fertilizer on Radix in Irrigated Desert Soil

A field experiment on fertilization effect of the Potassium Fertilizer on Potassium content was 113 mg/kg of Irrigated Desert Soil was conducted.The results showed that nitrogen and phosphorus fertilizer with the same application,main economic characters and yield of radix increased with increase of the amount applied K2O,the yield had a descending trend when application rate reached 360 kg/hm2.The highest yield was K2O application rate reached 360 kg/hm2 which the average yield of radix was 8 456.25 kg/hm2 and 50.25% higher than of the check.By using regression analysis method on the yield we obtained the optimum economic benefit of K2O applied amount was 365 kg/hm2,in this case,the theoretical yield was 8 520.00 kg/hm2,pure profit was 69 000 yuan/ hm2.