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一、试验目的河池地区经土壤普查发现,低产田面积不少,增产潜力大。本试验为改良利用这类田探索投资少、见效快的施肥方法,在一般施肥水平下,补施一定量的氮、磷、钾肥,看其增产效果;另外,在补施化肥中采用处理间化肥品种不同,而同一化肥品种用量相同的搭配或单施方法,看其经济效益。这为今后化肥合理搭配施用提供科学依据。二、试验方法供试土壤为红壤母质发育的次生性石灰板结田(本校2号田),PH 值8.15,有机质2.5%,全钾0.76%,全氮0.1795,全磷0.0745,速效磷5.54 ppm,效速钾92.9ppm,缓效钾122.5ppm。土壤机耕,冬翻
First, the purpose of the experiment Hechi area by soil census found that a lot of low-yield area, yield potential. This experiment is to improve the utilization of such fields to explore less investment and quick method of fertilizer application, in the general level of fertilization, make up a certain amount of nitrogen, phosphorus and potassium fertilizer to see its yield; In addition, the use of fertilizers in the treatment room Different fertilizer varieties, and the same amount of fertilizer varieties with the same method or single application, see its economic benefits. This provides a scientific basis for the rational use of fertilizers in the future. Second, the test method for the test soil red soils Parent material development of secondary lime board Jie Tian (our school No. 2 Tian), PH value of 8.15, 2.5% organic matter, total potassium 0.76%, total nitrogen 0.1795, total phosphorus 0.0745, available phosphorus 5.54 ppm, Efficiency potassium 92.9ppm, slow-acting potassium 122.5ppm. Soil plow, winter turn