Effect Of Several Mixed Trace Fertilizers On Growth And Nutrient Quality Of Alfalfa

The paper studied the effects of several mixed trace element fertilizer on the agricultural character, yield of dry forage and nutrient quality of alfalfa by the methods of field trial and pot trail. The main results were as follows:1. There were no significantly effect on the leaf-stem ratio (LS) and early water content of alfalfa among different mixed trace element fertilizer treatments in field trail. Applied trace elements fertilizer could promote alfalfa growth, increase yield, the content of crude protein and crude fat, reduce the content the crude fiber and crude ash. There was no significantly effect on nitrogen-free extract.The mixed trace element fertilizer could promote the content of Zn and B of alfalfa in field trail. But there was no same results among other elements in different batches, the content of Cu and Co was increase in first batch, and Mn, Mo Co and Fe was increase in second batch, in third batch was Fe, Mn, Cu and Co.2. Applied trace elements fertilizer could enhance plant height, and the content of crude protein, crude fibre, crude fat, phosphorus and calcium, and reduced the content of nitrogen-free extract of pot alfalfa. Furthermore, only the treatments of A₂B₂, A₂B₁,A₁B₂ could reduced the content of crude ash. And all treatments could promote the content enhancement of Cu, Mg, Mo and B.3. Spraying the trace elements on the alfalfa in the Yellow River Milk Produce Model Central, enhanced the yield of fresh forage, and remarkably increased the content of crude fibre and calcium. The content of crude fat, nitrogen-free extract and phosphor all remarkably decrease. The treatments affected the crude ash, but there was significantly different among different trace elements treatments. On the aspect of trace elements enrichment effect, each treatment could increase the content of trace elements.4. Spraying the trace elements on the alfalfa in the produce field of Qiliying town of Xinxiang could remarkably increase the leaf-stem ratio (LS) and the dry forage, but the content of crude protein and P of alfalfa was not significantly different, but could increase the accumulation content of crude protein and phosphors. The trace element...