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为探求在不同土壤肥力条件下,大白菜不同品种,不同生育期对肥料吸收规律,我所于1979年和1980年在四季青公社西山科技站,设不同施肥处理N、NP、NK、NPK的试验,每隔半月采样一次测定,1980年在四季青公社蔬菜管理站,八站生产队定期采样测定。为经济合理施肥提供科学依据。
In order to explore the law of absorption of Chinese cabbage under different soil fertility conditions, different varieties of Chinese cabbage at different growth stages, we set up Xishan Science and Technology Station of Sijiqing commune in 1979 and 1980 with different fertilization treatments of N, NP, NK and NPK Test, sampling once every half a measurement, 1980 Sijiqing commune vegetable management station, eight station production team regular sampling determination. Provide a scientific basis for economic and rational fertilization.