| Corn super-high-yield depends on the formation of the quality of dry matter accumulation,and the absorption of crop nutrient accumulation and can determine the amount of dry matteraccumulation, so the super-high-yield the absorption of nutrients accumulation characteristicsof spring corn is to solve the super-high-yield’s top priority. This article in view of the worldthree big one of the corn belt in west jilin province of jilin corn belt QianAn a semi-arid climateinfluenced the field experiment was carried out, including for local farmers to conventionalfertilization treatment arrangement and phosphorus accumulation characteristics research ofspring corn, and set up different ways of processing and applying phosphorus content, differentphosphate fertilization, On the basis of predecessors’ further understanding in the westernregion, s phosphorus accumulation characteristics of spring corn, master efficient phosphatefertilization techniques, technology and reasonable for the region to promote thesuper-high-yield fertilization control provide a scientific basis for the reasonable application offertilizer. This study concluded that the main results are as follows:1. Super-high-yield processing output up to13361kg/hm2, than conventional fertilizationby393kg/hm2, farmers and grain Numbers per spike, panicle number, ha are as output rises,the spike grain number of significant difference compared with other processing. Theprocessing of dry matter accumulation characteristics of bimodal curve trend, in jointing stage-large bell stage and spinning tasseling stage and milking stage characteristics of the two stagespresented double peak, the processing two peak accumulation average total amount up to30%and26%respectively. Super-high-yield processing in the later stage accumulation than9.56%higher than conventional treatment. According to Logistic equation fitting the amounts ofaccumulated nitrogen plant is calculated for each treatment for maximum absorption rate sizethe super-high-yield> normal processing, and the super-high-yield treatment duration ofmaximum rate and average absorption rate were higher than conventional treatment. Each organn on grain volume and n contribution rate are characterized by leaf> stem> panicle vegetation,transfer rate is for stem> leaf> panicle vegetation, the highest total contribution tosuper-high-yield processing. Nutrient use efficiency, the super-high-yield processing nitrogenphysiological efficiency and nitrogen use efficiency were slightly lower than normal processing.Fertilizer utilization efficiency, nitrogen agronomic efficiency, partial productivity are lowerthan normal processing, and utilization rate of nitrogen fertilizer is higher than conventional treatment.2. Different processing application rate of phosphoric fertilizer production performance forP140> P210> P280> P70> P0, and no significant difference between P140treatment withP140, but with the rest of significant difference between the groups. Each processing acresnumber of ears, grain number per spike and with the increasing of application rate ofphosphoric fertilizer showed increasing trend after reducing, then the maximum besides mu earNumbers, are processed in P140. P rate was obtained by production and the regression equationfor y=0.066x2+24.11x+11426, under the condition of this experiment theory can obtain themaximum yield of13644kg/hm2, corresponding to the phosphorus content of193kg/hm2.Aboveground dry matter accumulation of quality with the increasing of application rate ofphosphoric fertilizer showed the trend of increased after decreased first and biggest P140processing of dry matter accumulation in the mature period, up to342.81g/plant. Stage of drymatter accumulation also showed bimodal curve trend, namely in jointing stage-large bellstage and spinning tasseling stage and milking stage two stage accumulation is higher, theaverage percentage of accumulation quantity of30%and30%respectively. Stage, compared tothe groups at the beginning of the birth, the P0, P280processing stage, dry matter accumulationamount fell slightly, while P70, P140, P210processing is improved accordingly. Plantphosphorus accumulation trend similar to the trend of plant dry matter accumulation, to matureperiod always show the growing process. Each size order processing p accumulation in maturityas the P140> P210> P280> P70> P0, P140, P210treatment than P280, P70, P0reachedsignificant difference, but no significant difference between the two; P280, P70treatment thanP0reached significant difference, but no significant difference between the same twoprocessing. Each organ phosphorus accumulation showed a single-peak curve trend, theaccumulation of leaf and stem peak appeared in spinning stage, tasseling panicle vegetation infilling stage, and the grain is always continue to grow to maturity.3. P amount was in given conditions,50%of the total phosphate fertilization do basal,25%do jointing stage fertilizer,25%do bell mouth period fertilizer (P6) way of application ofyield than do the basal one-time use of (P1) phosphate fertilization way, but no significantdifference between the two; Do basal one-time phosphate fertilization treatment (P1) yieldhigher than50%of the total phosphate fertilization do basal,50%do jointing stage fertilizer(P4) or50%do bell mouth period fertilizer (P5) method, but also no significant differencesbetween the groups. Do basal applying phosphorus content of75%,25%do bell mouth periodfertilizer (P3) method is higher than that of applying phosphorus content of75%to basal,25%do jointing stage fertilizer (P2) method, and significant difference between the two processing. Super-high-yield processing (P1, P6) has the highest or higher mu ear number, spike, grainnumber per spike and the output at a relatively low level of processing (P0, P2) mu ear number,grain number and grain are low, and were significant difference between the two partsprocessing.50%of the total phosphate fertilization do basal,25%do jointing stage fertilizer,25%do bell mouth period fertilizer (P6) way of application of dry matter accumulation than dothe basal one-time use of (P1) phosphate fertilization way, but no significant difference betweenthe two. Way do basal one-time phosphate fertilization amount of dry matter accumulation (P1)is higher than50%of the total phosphate fertilization do basal,50%do jointing stage fertilizer(P4) or50%do bell mouth period fertilizer (P5) method, and the significant differencesbetween the groups. Do basal applying phosphorus content of75%,25%do bell mouth periodfertilizer (P3) applied amount of dry matter accumulation than do basal applying phosphoruscontent of75%,25%for jointing stage fertilizer (P2) method, and significant differencebetween the two processing.4. Super-high-yield spring maize yield efficiently applied technology mode, under thisexperimental condition, nitrogen (N) is300kg/hm2, phosphate fertilizer (P2O5) of140kg/hm2,potash (K2O) is140kg/hm2, applying the total nitrogen content as a basal,30%and40%forjointing stage fertilizer,30%tasseling spinning top application; applying total phosphatecontent as a basal,50%and25%for jointing stage fertilizer,25%for big trumpet periodfertilizer; potash fertilizer as basal one-time basal application. The use of technology model canbe obtained more than13500kg/hm2, s level, and phosphate fertilizer utilization rate can reachmore than29%, compared with the local farmers yield was5.7%higher than that of theconventional fertilization methods, phosphate fertilizer use efficiency increased by9%,achieved the purpose of spring maize yield, phosphorus efficient. Applying nitrogen and potashcontent and way of application of constant, phosphate fertilizer (P2O5) seems the same, but as abasal one-time into the way of application, yield of13595kg/hm2, also can reach the level ofsuper-high-yield, and also the efficiency of phosphate fertilizer by up to25%. Through testshowed that phosphate fertilization period p two topdressing than as basal and topdressing at atime effect is good, two fertilizer chase earlier than chase good later, early heavy after late isbetter than good. |
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