磷肥恒量监控施肥法在农业中应用探讨  

FEASIBILITY OF A FERTILIZATION METHOD FOR KEEPING CONSTANT APPLICATION RATE OF PHOSPHORUS BY MONITORING AVALIABLE PHOSPHORUS IN THE SOIL

作　　者：王兴仁[1] 曹一平[1] 张福锁[1] 陈新平[1] 

机构地区：[1]北京农业大学植物营养系,100094

出　　处：《植物营养与肥料学报》1995年第3期59-64,共6页Journal of Plant Nutrition and Fertilizers

摘　　要：本文提出了磷肥恒量监控施肥法,并论证了它的科学性和可行性,其要点是: 1.通过肥料长期定位试验可以得到将土壤速效磷长期维持在临界水平范围内的施磷量。 2.该施磷量可以长期维持或提高土壤供磷能力并获得作物持续高产和最大经济效益。 3.该施肥量虽然因作物或种植制度而异,但可以在一定施肥区域不同肥力水平的土壤上和一个相当长的时期内保持相对稳定。The paper proposed a method on keeping constant application rate of phosphorus by monitoring available-P in the soil and demonstraited feasibility of the method. The key points are as follows: * 1.A rational application rate was establised through long- term experiment to maintain the soil available-P within the critical level. 2.This application rate could maintain or increase soil avilable P, hence sustainable high yield and maximum effciency of the fertilizer were obtained. 3.Within a given application area under non-stressful soil conditions but with various soil fereility levels, this application rate could remain relatively stable for a considerably long period.

关 键 词：磷肥 恒量监控 长期定位试验 

分 类 号：S143.2[农业科学—肥料学]