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科学施肥是保证产量和提高肥料利用率的主要措施之一。由于采用一家一户分散经营模式,田块面积普遍较小,若依据田块进行推荐施肥,实现实时实地精准管理不经济,实际操作也有难度~([1-3])。2006年以来,北京市开始实施测土配方施肥项目,通过开展多点“3414”田间试验制定了不同作物大配方,但“大配方”是否合理,需要进一步验证,同时根据验证
Scientific fertilization is one of the main measures to ensure yield and improve fertilizer utilization. Due to the adoption of a decentralized operation mode of one household, the area of plots is generally small. It is uneconomical to carry out accurate fertilization according to plots of plots and to realize accurate and real-time on-the-spot management. Practical difficulties are also difficult (1-3). Since 2006, Beijing has started the project of soil testing and formula fertilization, and formulated the large-scale formula for different crops by carrying out the multi-point “3414” field experiment. However, whether the “big formula” is reasonable and needs further verification,