三年21处农村基点氮肥效应试验研究结果表明:氮肥有明显促进营养生长效果。不同地力水平上,花生的主茎高、侧枝长、总分枝数均与施氮量呈显著或极显著正相关。氮肥施用过多,使营养生长和生殖生长失调,单株结果数减少,导致荚果产量降低。低肥田块,亩施标准氮肥(硫酸铵、含氮21％)以38.1公斤为宜,中肥地力田块,亩施标准氮肥11.9—23.8公斤可获得较高产量和经济效益,高肥地力情况下,氮肥效果不明显。 Twenty-one rural areas in three years, nitrogen effect test results show that: nitrogen fertilizer significantly promote the effect of vegetative growth. At different soil fertility levels, main stem height, branch length and total branch number of peanut were significantly or very significantly positively correlated with nitrogen application rate. Excessive use of nitrogen fertilizers can cause malnutrition in vegetative and reproductive growth and a reduction in the number of fruit per plant, resulting in reduced pod yield. Low fertility plots, Mushu standard nitrogen fertilizer (ammonium sulfate, nitrogen 21%) to 38.1 kg is appropriate, fertile field plots, Mushi standard nitrogen fertilizer 11.9-23.8 kg available higher yields and economic benefits, high fertility conditions Under nitrogen fertilizer effect is not obvious.