为了加快北京市延庆县大白菜测土配方施肥技术的推广和应用,为了在大白菜上应用测土配方施肥技术,提高大白菜种植效益,从2007年开始,北京市延庆县农业技术推广站进行了不同的氮、磷、钾肥施用量对大白菜经济产量影响的“3414”肥效试验、反馈试验。结果表明:在不同氮、磷、钾肥施用量条件下,试验最佳氮、磷、钾肥施肥量分别为10.87、4.30、8.36kg/667m2,对应的最佳产量为8719.52kg/667m2;最佳施肥处理与传统施肥相比,可节肥3.47kg/667m2,增产665.42kg/667m2,增产率8.19%,总节本增收346.59元。通过2年试验、示范推广,2007年示范推广面积达到了37.87hm2,增产37.50kg,总节本增收19.70万元。2009年推广种植面积达到了132.40hm2,预计增产131.00万kg,增收68.80万元,经济效益显著,推动了延庆县大白菜产业的发展。同时,加大了示范、推广宣传的力度,建立了大白菜示范展示基地,举办大白菜测土配方施肥技术讲座8次,培训农民1000人次,发放技术宣传材料1000份。为延庆县大白菜推广测土配方施肥技术工作打下了良好的基础。 In order to accelerate the popularization and application of the technology of soil testing and fertilization of Chinese cabbage in Yanqing County, Beijing, in order to apply soil testing and formula fertilization technology to Chinese cabbage and improve the planting efficiency of Chinese cabbage, from 2007, Yanqing County Agricultural Technology Extension Station The effect of different nitrogen, phosphorus and potassium fertilizers on the economic yield of Chinese cabbage was tested by “3414” fertilizer efficiency test and feedback test. The results showed that the best nitrogen, phosphorus and potassium fertilizers were 10.87, 4.30 and 8.36 kg / 667m2 under the different application rates of nitrogen, phosphorus and potassium respectively, and the best yield was 8719.52kg / 667m2. The best fertilization Compared with the traditional fertilization, the treatment can save 3.47kg / 667m2, increase yield 665.42kg / 667m2, increase yield 8.19%, total cost increase of 346.59 yuan. After 2 years of trial and demonstration, the demonstration area for promotion in 2007 reached 37.87hm2, an increase of 37.50kg, and an increase of 197,700 yuan in total cost. The planting area in 2009 reached 132.40hm2. It is estimated that the output will be increased by 1.13 million kg and the income will be increased by 688,000 yuan. The economic benefit is remarkable and the development of Chinese cabbage industry in Yanqing County is promoted. At the same time, increased demonstration, promotion efforts, the establishment of a demonstration base of Chinese cabbage, Chinese cabbage soil testing and fertilization technology lectures held eight times, training farmers 1,000 people, issuing technical information materials 1000. It laid a good foundation for promoting the technology of soil testing and formula fertilization of Chinese cabbage in Yanqing County.