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本试验主要研究在免耕条件下小麦合理经济施肥技术,以提高肥料效益,达到高产稳产的目的。 方法和经过 试验于1984～1986年分别在无锡县农科所和南京燕子矶乡进行。供试品种为扬麦4号小麦,分设两种施肥水平,即每亩总施纯氮12.5公斤和17.5公斤,其中有机氮与无机氮之比为4:6。另设亩施氮12.5公斤全施有机肥和全施化肥,以不施肥作对照。基肥和追肥的比例一律为6:4。追肥方式分三种:(1)苗肥0+返青肥10％+拔节肥30％;(2)苗肥15％+返青肥10％+拔节肥15％;(3)苗肥30％+返青肥10％+拔节肥0。共13个处理,重复3次,随机排列,小区面积0.03亩,采用板茬劈沟条播和机条播。
This experiment mainly studies the reasonable economic fertilization technology of wheat under no-tillage conditions in order to improve the fertilizer efficiency and achieve the purpose of high-yield and stable yield. Methods and experiments were conducted in 1984-1988 in Wuxi County Agricultural Science Institute and Nanjing Yanzigong Township. Test varieties for the wheat Yangmai 4, divided into two kinds of fertilizer levels, that is, total nitrogen application per acre 12.5 kg and 17.5 kg, of which organic nitrogen and inorganic nitrogen ratio of 4: 6. The other set of 12.5 kg of nitrogen fertilizer all organic fertilizers and fertilizer, in order not to fertilize the control. The ratio of basal fertilizer and dressing is 6: 4. Top dressing methods are divided into three types: (1) Miao fertilizer 0 + 10% of green tea and 30% of jointing fertilizer; (2) Miao fertilizer 15% + green tea 10% + jointing fertilizer 15%; Fertilizer 10% + jointing fertilizer 0. A total of 13 treatment, repeated 3 times, randomly arranged, the plot area of 0.03 acres, using stubble split groove broadcast and machine sowing.