论文部分内容阅读
研究结果表明:渭北旱塬苜蓿的化肥最佳经济施用量为尿素15kg/亩,过磷酸钙50kg/亩,具有增产、增效、改善品质的多重效果,第3年苜蓿头茬鲜草产量较对照提高28.1%。
The results showed that the best economic application of chemical fertilizer for alfalfa in Weibei arid highland was urea 15kg / mu and superphosphate 50kg / mu, which had the multiple effects of increasing yield, improving efficiency and improving quality. In the third year, the fresh yield of alfalfa 28.1% higher than the control.