Research Of Drip No-till Cropping Oil Sunflower Efficient Planting Patterns

Object:Through the study of dry matter accumulation and distribution,grain filling,water use efficiencyand yield formation of multiple cropping oil sunflower under the condition of drip irrigation and no-tillageto explore the reasonable planting density,plant row spacing and reveals the high yield mechanism and thebest group planting patterns; Through the ecological adaptability analysis of different early maturityvarieties multiple cropping oil sunflower to select the the best early maturity variety which have highyield,excellent biological properties and strong adaptability;Through combining with production practiceinvestigation and experimental study on the regional development of northern xinjiang to find out the highyield cultivation measures of no-till oil sunflower under drip irrigation after the wheat crop and establishcultivation technique regulations.Methods：The study sets the variety of xinkui10as test materials,six planting density levels and3repeat,double factor randomized block design of experiment was adopted, we studied the growthdevelopment,dry matter accumulation, LAI and yield of oil sunflower;eight different early-maturingvariety of multiple cropping oil sunflower in north xinjiang was chosen in the varieties screening test asexperimental materials,ecological adaptability, the whole growth period, growth traits, yield and yieldstructure of sunflower were studied and compared,the most suitable variety of multiple cropping oilsunflower was selected for promotion in the region of Mount Tianshan in north xinjiang.Results：1.Planting density and row spacing have a significant impact on the growth of the oil sunflower, the LAIbefore filling increased with the increase of density, but the speed of LAI falling down on high densitytreatment was the fast during the late growth stage,the LAI of wide and narrow row spacing plantingtreatment above than the same row spacing during whole growth period.2.The dry matter accumulation before flowers increased with the increase of planting density, and the drymatter accumulation on the mature period showed90thousand plants/hm2>11.25thousand plants/hm2>6.75thousand plants/hm2.the spacing treatment of90thousand plants/hm2and60+30cm is beneficial todry matter before flowers transferred to flower disc,the dry matter accumulation after flowering and thecontribution rate to seed respectively increased by36.1%25.6%and24.7%25.6%compared with11.25thousand plants/hm2and67.5thousand plants/hm2and showed higher yield,the difference of drymatter accumulation and allocation between different row spacing was not significant.3.The grain filling grouting process conforms to the single-peak curve,the23rd day of grouting reachedmaximum grouting rate, and the treatment of Z-60+30is the biggest, which is0.35g/hundred grains perday.With increasing planting density, the time of grain maintaining maximum grouting rate and the timeproportion of grouting growth period was relatively less in the whole growth period, the filling rate andmaximum grain filling rate duration of medium density treatment are the maximum.4. Significant difference of water use efficiency was found among the different plant row spacing,mediumdensity reached the highest water use efficiency, the high density and low density is relatively consistentand lower.5.The yield of different plant density level showed:90thousand plants/hm2>11.25thousand plants/hm2>6.75thousand plants/hm2,the yield of wide and narrow row spacing planting treatment bigger than the samerow spacing under the same planting density level.6.The suitable cultivation mode of multiple cropping oil sunflower in northern xinjiang region is90thousand plants/hm2and60+30cm spacing planting,advantage was found that individual growth was more robust and group structure is reasonable which benefits to the production and distribution ofphotosynthate, then achieves the hightest yield under this group configuration.Conclusion：Xinkui10is determined as the most suitable varieties in northern xinjiang region, thesuitable planting density and plant row spacing is60thousand plants/hm2and60+30cm spacingplanting,the best farming irrigation mode is the drip irrigation and no-till planting patterns which canobtain the hightest yield of oil sunflower, and develop a suitable cultivation of double drops and highefficient planting patterns technology system which is fit for the north slope of tianshan mountain region.