Potassium supply capability from soil and potassium balance

• Published in: Shandong nong ye da xue xue bao Vol. 43; no. 4
• Main Authors: Liu Linhu, Wendeng Agriculture Bureau, Wendeng (China), Bi Wuwen, Wendeng Agriculture Bureau, Wendeng (China), Li Zaoyong, Wendeng Agriculture Bureau, Wendeng (China)
• Format: Journal Article
• Language: Chinese
• Published: 01.12.2012
• Subjects: BALANCE; BALANCES; BALANZA; http://www.fao.org/aos/agrovoc#c_6139; http://www.fao.org/aos/agrovoc#c_7156; http://www.fao.org/aos/agrovoc#c_7523; http://www.fao.org/aos/agrovoc#c_9062; OFERTA; OFFRE; POTASIO; POTASSIUM; SOIL; SOL; SUELO; SUPPLY

在不同的供钾地块上，通过田间试验研究不同作物的需钾水平。结果表明，在土壤速效钾为70mg／kg的地块上，施用钾素化肥有一定的增产效果，土壤含钾量越低，施钾的增产效果越明显，在玉米、小麦等禾本科作物上增产尤为明显。试验土壤上，每667m2施用有机肥3000kg并施钾素6．23kg，可以补偿土壤中钾的亏损，达到钾素平衡。 In the different potassium plots, the field experiment by different crops. When soil available potassium in 70 mg/kg in to find out the need...