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棉田钾肥通常集中在大田期施用,棉花苗床内一次集中施用钾肥的可行性、安全性以及增产效果等,目前尚未见报道,为此,进行了本试验。1材料与方法1.1供试材料 高效液体生物钾(江苏农林厅、南京农大联合研制),氯化钾固剂(市售、加拿大产)。供试棉花品种“泗棉3号”。试验地土质为中壤,含有机质2.87％、全氮0.20％、速效磷6.38mg/kg、速效钾117.06mg/kg。1.2试验处理 设每m~2苗床用生物钾6ml、8ml、
Potassium fertilizer in cotton fields usually concentrated in the field application, a centralized application of potash in cotton seedlings in the feasibility, safety and yield effects, has not been reported, for this reason, the test was carried out. 1 Materials and methods 1.1 The test materials efficient liquid bio-potassium (Jiangsu Agriculture and Forestry Office, Nanjing Agricultural University jointly developed), potassium chloride solid (commercially available, Canadian production). Test cotton varieties “Simian 3.” The test soil is medium earth, containing 2.87% of organic matter, 0.20% of total nitrogen, 6.38mg / kg of available phosphorus and 117.06mg / kg of available potassium. 1.2 Experimental Treatment Set m ~ 2 seedbed with biological potassium 6ml, 8ml,