| We researched the influence of the different concentrations of manganese sulfate, zinc sulfate, ammonium molybdate, sodium selenite treatment alone and hybrid spring wheat seed dressing on seed germination, seed potential, and biomass accumulation; Also studied different concentrations of manganese, zinc, selenium, molybdenum processed separately and mixed spring wheat seed dressing for plant height, ear length, yield and its components, variation of leaf area index of various growth stages of spring wheat in field experiments. The main results are as follows(1)We found that manganese sulfate, zinc sulfate, sodium selenite, molybdate alone dressing processing wheat seed had a great influence on germination rate and germination potential. Under manganese seed dressing treatment, all test concentrations of wheat seed germination rate is higher than the control, and the amount of dressing:manganese sulfate reached 12g/kg, the germination rate reached a peak of 76.67%, while the wheat seed manganese salt treatment germination energy also was impacted; when dressing amount of manganese sulfate reached 12g/kg, the germination potential reached to 30%, much higher than 13.33% controlled; secondly, zinc on wheat germination also had a greater impact on seed germination, when dressing amount of zinc sulfate reached 5g/kg, the germination of wheat seeds have a role in promoting the germination rate while the remaining dressing concentration has dropped somewhat, but not significantly reduce the margin; Furthermore, selenium salt treatment on wheat seed dressing also had an impact on seed germination rate, the concentration of sodium selenite dressing between l.Omg/kg-5.0mg/kg range, wheat seed germination have a certain role, but this level is not large role in promoting; different concentration of ammonium molybdate effected seed germination,when dressing amount reached 4g/kg, the germination potential was higher than the control reaching a peak.(2)Dealt with zinc sulfate dressing treatment, when dressing amount is 5g/kg, the seedling leaf and root has more efficient accumulation; Dealt with manganese sulfate dressing treatment, when dressing amount is 4-8g/kg, the seedling leaf and root has more efficient accumulation than other concentrations; the impact of sodium selenite on the efficiency of seed matter accumulation of wheat seedlings are large, in which the concentration of efficiency was dressing 5.0,7.0mg/kg matter accumulation improved significantly; last molybdate dressing treatment combinations, although the growth of seedlings has a certain role, but this effect is not obvious and the difference was not significant.(3)When manganese and zinc are mixed seed dressing, seed germination rate and germinating have a greater role in promoting the concentration ratio of the combination of manganese sulfate 8g/kg+and zinc sulfate 4g/kg, manganese sulfate 6g/kg+ zinc sulfate 3g/kg; manganese, zinc, molybdenum mixed dressing process, the concentration ratio of the combination of the amount of manganese sulfate dressing 6g/kg+zinc sulfate 3g/kg+to improve seed germination when promoted molybdate 2g/kg; and manganese, zinc, selenium treatment dressing mix of three elements, manganese, zinc concentration gradient was 6g/kg, under 3g/kg, mixed with sodium selenite 1.0-3.0mg/kg to improve seed germination certain sensitivity to the role, and with increasing manganese, zinc concentration of mixed wheat seed germination rate is affected by changes in volume of sodium selenite upgrade; manganese, zinc, selenium, molybdenum dressing mix the four elements can be selected mix the kind of volume are: manganese sulfate 8g/kg+zinc sulfate 4g/kg+selenite 0.6mg/kg+molybdate 4g/kg this combination, the higher seed germination rate, and the rest are not ideal combination of performance, at the same time, in addition to manganese impact of two elements zinc dressing mix the seed germination potential cause relatively large impact, the other multi-element produced by mixing their germination potential is not significant.(4)Manganese, zinc, selenium, molybdenum mixed elements on seed wheat affects the outcome of seedling growth. The results were:dressing amount of manganese sulfate combination 6g/kg+zinc sulfate 3g/kg+selenite 5.0mg/kg, manganese sulfate 6g/kg+zinc sulfate 3g/kg+selenite 1.0mg/ kg+molybdate 2g/kg, manganese sulfate 8g/kg+zinc sulfate 4g/kg+when selenite 1.0mg/kg, wheat seedling stems elongate significantly role in promoting, when manganese, zinc ratio raised to 10g/ kg and 5g/kg or molybdate concentration up to 4g/kg, the elongation of wheat seedlings have significantly inhibited; for wheat seedling stems efficiency in terms of leaf matter accumulation, the amount of a combination of manganese sulfate dressing 6g/kg+zinc sulfate 3g/kg+selenite l.Omg/ kg, manganese sulfate 6g/kg+zinc sulfate 3g/kg+selenite 5.0mg/kg, sulfuric acid manganese 6g/ kg+zinc sulfate 3g/kg+ selenite l.Omg/kg+molybdate 2g/kg, the optimal combination of performance; and in the ratio of these combinations, the addition to the manganese sulfate 6g/kg+ zinc sulfate 3g/kg+selenite 5.0mg/kg in combination, the remaining proportion of the combination have a negative impact on the accumulation of wheat root material, but the effect was not significant.(5)Dressing combination of three categories of this experiment, the different elements of the concentration ratio of spring wheat seed dressing treatment, their greatest impact on yield formation factor is population density of wheat, while the four elements of the test, the population density of wheat plays a major role in manganese, zinc, the concentration ratio of the two elements were 6g/kg,8g/kg and 3g/kg, at 4g/kg of wheat each treatment combination has a high population density, while both higher yield, mix ratio of the concentration of high population density instead of wheat produce significant decline; and the impact of selenium on the population density of the wheat is showing "polarization" phenomenon, in the mixed concentration of 0.6-1.0 mg/kg and 7.0mg/kg, the it has a certain role in increasing wheat population density exceeds this range, wheat density decreased, but grain weight increase to a certain extent, but the effect is not significantly increase, Therefore, in the actual production process, if the mix of elements processed wheat seed dressing, choose 0.6-1.Omg/kg of sodium selenite were dressing, if the dressing is optional single selenium 7.0mg/kg sodium selenite, it has a high concentration of selenium in the environment, in addition to their full yield of other physiological and biochemical effects and effectiveness of agricultural economics; for molybdenum, the mixing element added molybdate, wheat has a negative population density effect, but it can be increased to a certain extent, grains per spike and spike length, to improve wheat yield of wheat at lower population densities have a certain role.(6)Through analyzing each stage of growth and leaf area index of observation and analysis of each treatment,we conclude that selenium, molybdenum, both non-essential elements of wheat booting to reduce leaf area during the flowering period had some slowing effect, so that in this deal under the wheat flowering and grain filling with higher photosynthetic efficiency, elongation, and the full extent of the reproductive organs of wheat (wheat) of grain, are present promotion; in addition, during the booting stage and flowering leaf area index of each treatment the difference between the yield difference is consistent with the final wheat. |
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