The Environmental Factors And Yield Components Of Different Close-planting Jujube Modes And Economy Analysis

The research discussed the influence of six different pruning ways of close-plantingjujube in the thirteen groups of first division in Xinjiang Production and Construction Corps.In this study, in order to analyze the economic benefits of different ways, the researchersinvestigated the environmental factors, tree structure, yield components, cultivation practicesand output ratio in different jujube close planting pruning ways to the inference of thegrowth management process. The main conclusions are as followed:(1)The air humidity of the canopy height in six different trim ways shows similar trend,turns high in the morning and evening and becomes low in the afternoon. Specifically, thecrown of the air humidity reduces gradually from8:00to14:00, air humidity is stabilizefrom14:00to18:00, and begins to rise from18:00to20:00, but not higher than the airhumidity in8:00.Different canopy height diurnal variation of the light intensity exhibits asingle peak curve, gradually increases from8:00to14:00and to14:00reaches a maximumand then decreases. Crown canopy of different Jujube pruning light intensity change trend issimilar, shows a single peak curve, which from8:00increases gradually and reachesmaximum value at14:00.Then declines gradually, but different pruning light intensitydifference is significant, the surface light intensity rises slowly from8:00to12:00, with theincrease of the canopy height, light intensity increases significantly and decreases after thepeak.(2)Different pruning on jujube tree has little effect on cella relative humidity. Mode6surface relative humidity is slightly low and other methods is not different significantly;peripheral relative air humidity differences in surface is slightly larger and decreases withcanopy height increasing; the difference of lines and influence of row spacing, relative airhumidity between the lines, lines relative air humidity has significant difference. While thedifference of pruning ways and crown height, the temperature of canopy between the lines, lines, cella, peripheries change in the larger and the difference of relative air humidity issignificant. The light intensity rises of canopy between the lines, lines, cella and peripherieswith the crown height increasing; different pruning surface and light intensity in1.5mchanges slightly and changes largely in1.0m, the light intensity of mode5is highest and ofmode1is lowest generally.(3)The yield composition of different pruning ways also has significant difference.Per jujube hang number of heavy pruning is larger than light pruning in gray jujube dormant,but the lignification jujube number, lift jujube fruit number, per fruit height and weight oflight pruning than heavy pruning, and pulp thick, sugar content high has good effect. FourPruning ways of Ziziphus jujub have large difference. Per jujube hang number and fruits ofmode5is high and fruits number is low, the lignification jujube number is easier to producewoody date hanging if making use of perennial early fruits. The jujube yield components areconcerned with per plant height, number of per tree and per acre effective plants. The plantjujube hanging of mode6is low, but jujube fruit number is the highest, lignification jujubehanging and sitting high rate height, lignification jujube fruit number is highest and jujubeper plant fruit has the highest number so higher yield per plant. Jujube fruit quality ofdifferent pruning methods shows significant differences. Four pruning edible rate the same,pruning four single fruit weight is the lowest. The soluble solids content highest fleshthickness minimum, stone is the lightest; single fruit weight of mode5is the highest, but thesoluble solid content is lowest and flesh thickness of the thickest kernels.(4)The environment factor has certain influence on fruit quality, which expresses fruitquality of upper and middle layers of crown is better than that of the lower ones; thecorrection of environment factor and fruit quality in the presence of partial correlation anddifferent pruning methods is significant.(5)The management measures of different pruning methods are similar, but the amount ofinvestment is different. The management costs vary greatly and the economic benefits varygreatly. The economic efficiency of gray jujube pruning way is higher than the mode2 and pure profit of11477.7yuan in mode1of which investment ratio is392.76%, peracre of pure profit of7254.52yuan in mode2of which investment ratio is332.74%. Junjujube pruning way six acres of net profit for the3175.11yuan, produce cast than131.43%and economic benefits of mode4is the lowest, net profit per mu for60.91yuan of whichoutput input ratio is2.5%. The economic benefit was higher than that of ziziphus jujube.