Potassium, Zinc, Manganese Fertilizer On Winter Wheat Physiology, Yield And Quality

The Effect of Combined K-Zn-Mn Fertilization on Physiological Index, Yield and Quality of Winter Wheat Abstract At the condition of field production, the experiment was conducted on calcareous cinnamon soil of south shanxi. Using the general quadratic rotatory regression of three factors five levels, we studied the effccts of combined K-Zn-Mn on physiological index, yield and quality of winter wheat. The result is summed up as follows: 1. Suitable combined of K-Zn-Mn significantly increased the deoxidize sugar of wheat's plant, roots energy and NR activity. The effect of K is the best. 2. Suitable combined of K-Zn-Mn significantly increased the content of chlorophyll of flag leaves, postponed their decomposition, and prolonged their function stage. The single effect of K is the best. 3. Under still dry weather during the middle and later growth stage of winter wheat, suitable combined application reduced the WSD of flag leaves, increased leaf area, improved photosynthesis efficiency and accumulation of dry material. 4. Suitable combined of K-Zn-Mn increased the content of K, Zn, and Mn in soil, it also stimulated the absorption and transpiration of N, P, K, Zn, Mn from flag leaves to seed. 5. K, Zn, Mn, application singly or combined can increase wheat's yield, but the later effect was better and the economical value was higher than the former. 6. K, Zn, Mn combined application significantly improved the process quality of winter wheat. 7. Under the condition of this experiment and this year's weather, the optimal application rate was potassium chloride 3l.l4 3845 kg667m2 zinc sulfate 6.O2-7.23 kg.667m ,manganese sulfate 4.82?.92 kg.667m2.