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测土配方施肥是根据采土化验结果,参照作物生长发育需肥规律、土壤供肥性能、肥料利用率、预期产量目标等因素.通过综合运算,提出应施有机肥和氮、磷、钾及微量元素的适宜施用量、比例及其相应施肥技术方案。它改变了传统施肥方法的盲目性。具有提高肥效、减少投次、全价供应作物生长发育所需养分、提高产量和品质等优点,是实施作物施肥管理指标化、规范化、按比例的科学施肥技术。 1.因地制宜,科学摆布采土样点科学布点是准确掌握地块肥力的基础。样点要尽可能有广泛的代表性。方法可采用对角线法、棋盘法或“之”字形法。肥力比较一致的正规形田块,采用对角线法或棋盘法。即在距田块四角边内约5-10米处各选1点,对角线或棋盘式布点采土。5亩以下取5个点,5—10亩
Soil testing and formula fertilization is based on the results of soil testing, with reference to crop growth and development needs of fertilizer law, soil fertility performance, fertilizer utilization, the expected output target and other factors.On the basis of comprehensive calculation, put forward the application of organic manure and nitrogen, phosphorus, potassium and Appropriate amount of trace elements, the proportion and the corresponding fertilization technology program. It has changed the blindness of traditional fertilization methods. It has the advantages of improving the efficiency of fertilizer, reducing the investment, supplying the nutrients needed for crop growth and development at full price, and improving the yield and quality. It is the scientific and fertilization technology that implements the indexization, standardization and proportionality of crop fertilizer management. 1. According to local conditions, scientific preparation of soil sampling site layout is accurate grasping the basis of fertility. The samples should be as broadly representative as possible. Methods can be diagonal, checkerboard or “” shape method. Fertility is more formal field plots, using the diagonal method or checkerboard method. That is, in the edge of the field from about four corners of the box about 5-10 meters of each election 1:00, diagonal or checkpoint layout mining soil. Take 5 points below 5 acres, 5-10 acres