Fertilizer amount 第1页

Regulative effect of nitrogen fertilization on grain yield,quality and photosynthesis of flag leaves in different wheat varieties INVESTIGATION OF NITRATE POLLUTION IN GROUND WATER DUE TO NITROGEN FERTILIZATION IN AGRICULTURE IN NORTH CHINA Effects of Sowing Density, Fertilizer Amount in Seedbed and Seedling Age on Seedling Quality and Grain Yield in Paddy Field for Mechanical Transplanting Rice