Abstract: Fertilizer application is one of important treatments to improve productivity of grassland. Effects of balance fertilizer application on old Elymus sibirlius L.cv. Productivity were studied in the field. It was proved that either applied potassium fertilizer on the basic of applying nitrogen fertilizer or applied phosphorus fertilizer on the basic of applying the mixtures of nitrogen fertilizer and potassium fertilizer, that all increased the above and underground biomass, seed yield, CP content a...
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