Effects Of Different Density And Nitrogen Fertilizer Applied Ratio On Yield And Quality Of Super High-yield Wheat

In the predecessor about the different type of spide quality and output research foundation, take the field test as the basis, has studied the nitrogen fertilizer and the density mutually opposes the different type of spide high production wheat the output and quality effect.The findings show that:1 Effects of density and nitrogen fertilizer applied ratio on yield and its components of super higher-output wheatsDifferent density and nitrogen fertilizer applied ratio of the super-high-yield production of wheat have shown the role of the regulator. Appropriate density, to recover a reasonable proportion of nitrogen-based structure can be output, significantly increase the yield of wheat. Yannong19 and xinong 979 are medium density (300×104 basic seedling /hm2), the nitrogen-based recovery of 5:5 and 4:6 ratio of configuration, production, or is closer to the level of super-high-yield (yield≥9000kg?hm-2).The best combinations are A3B1C2 of yannong19 and A2B2C2 of Xinong979, the highest yield reached 9576.67 kg?hm-2 and 9133.93 kg?hm-2.Super high-yielding wheat field in Huaibei area middle planting density and to maintain an appropriate increase fertility, the proportion of late nitrogen, contribute to effective coordination of the two ultra-high-yielding wheat varieties of the balance between production structure in order to achieve super-high-yield wheat.2. Effects of different density and nitrogen application techniques on population qualities of super-high-yield wheatsThe proportion of nitrogen-based recovery of the same density, increase in tiller number, leaf area index increased, dry matter accumulation increased; when the density is the same, the economic factor and the recovery of nitrogen is proportional to the ratio of nitrogen to increase the recovery of carbohydrates in favor of operation capability, with the shift of nitrogen fertilizer after the tiller number, leaf area index, dry matter accumulation increased. Density and the ratio of nitrogen-based recovery of the super high-yielding wheat tiller dynamics, leaf area index, dry matter accumulation and other groups have an important impact on the structure.Yannong19 in 300×104 basic seedling/hm2, nitrogen-based than the 4:6 combination of the recovery process and Xinong 979 in 300×104 basic seedling/hm2, nitrogen-based recovery to deal with than the 5:5 combination of the number of mature tiller were 728.24×104hm-2, 647.76×104hm-2, leaf area index at heading stage were 6.56,6.77, respectively, dry matter accumulation of mature 17419.75kg?hm-2, 18937.85kg?hm-2, a more co-ordination group structure and late leaf area of wheat growth are relatively slow decay rate.3. Effects of different density and nitrogen application techniques on Senescence of Flag Leaf of super-high-yield wheatThe same density conditions, the increase in the proportion of nitrogen will help to deal with delayed flag leaf senescence, the same proportion of the base under the conditions of recovery, reducing the density of slow processing in favor of flag leaf senescence; density, the ratio of nitrogen-based recovery of the tobacco growers Xinong 19 and flag leaf senescence 979 an important regulatory role, and the density and the ratio of nitrogen-based recovery of mutual effect between. Two super-high-yield wheats flag leaf senescence indicators increased with the aging delay dressing, with inconsistent density, chlorophyll, superoxide dismutase content decreases with increasing density, peroxidase and malondialdehyde are increased with increasing density Great. 150×104 basic seedling/hm2, the base ratio of 5:5 up to deal with flag leaf chlorophyll, superoxide dismutase content in the highest, and to deal with other differences reached a significant level; peroxidase, malondialdehyde is 450×104 basic seedling/hm2, the base ratio of 5:5 up to deal with the highest content of flag leaf. Test showed that the density, the ratio of nitrogen-based recovery of two super-high-yield wheats chlorophyll content, superoxide dismutase, peroxidase, malondialdehyde and other indicators of aging significant regulatory role. Increase in the proportion of nitrogen will help delay the flag leaf senescence, the density of the flag leaf senescence indicators of the impact of inconsistent laws.4 Effects of different density and nitrogen application techniques on the main quality of super-high-yield wheatsTwo super-high-yield wheat wet gluten content and sedimentation value increases with decreasing density, wet gluten content of yannong19 growers to reduce the magnitude of the maximum of 8%, Xinong979 the most significant decrease of 8.1%, the two species of super-high-yield wheat wet gluten content and sedimentation value increased with the density changes of the same, no significant difference. Yannong19 to reduce the settlement value of the maximum rate of 3.9ml, Xinong 979 for 3.3ml, changes in scope than the yannong19 smaller growers. Formation time, settling time increases with the density showed an upward trend, the formation time of 19 tobacco growers rise to 1.03-2.37min, stabilization time for the 0.09-2.41min; Xinong 979 increases the formation time for the 0.63-1.24min, stability time of 0.29-1.41min; than 19 small tobacco farmers. 5 Effects of different density and nitrogen application techniques on the lodging index of super-high-yield wheatsYannong19 in the planting density of 450×104 hm-2 of the three to deal with a high center of gravity more than 49.43cm, are greater than 0.94 degree of lodging, lodging reached the level of all three, a density of 300×104 hm-2, nitrogen-based recovery 6:4 mix ratio of height to deal with the focus of 48.33cm, the extent of lodging up to 1.06, a degree of lodging, other deal with lodging; the lodging Xinong979 cases occurred in planting density of 450×104 hm-2 treatment, the base the recovery ratio of 4:6 and 6:4 ratio of base to recover the degree of lodging reached to deal with two, the base ratio of 5:5 up to deal with a degree of lodging.Yannong19 internode length, diameter, wall thickness and center of gravity height and lodging a strong correlation index, the correlation coefficient reached a very significant level, the focus of internode length and height and lodging index of the existence of significant positive correlation between outside diameter and wall thickness between the index and lodging significant negative correlation between wall thickness and diameter greater than the negative correlation; Xinong979 between section of the length, diameter and wall thickness index and lodging a strong correlation , correlation coefficients are extremely significant level, internode length and lodging index of the existence of significant positive correlation between the diameter and wall thickness between the index and lodging significant negative correlation between the diameter and wall thickness greater than the negative correlation, The center of gravity height and lodging index is not significant.