| High yield and high efficiency ecological theory and technology is the core idea of cultivated areas, the potato/maize relay intercropping make full use of the land resources, the three-dimensional resources as well as the advantage resources of time and space, in order to further reveal the inherent of relay intercropping in the production of solar energy utilization in the built mechanism, adhering to the standardization of precision farming modernization strategic thought, with spacing (X1), line spacing (X2), the number of rows (X3), potato density (X4) and corn density (X5) with five factors quadratic orthogonal rotation group of legal design, intercropping with potato yield, corn yield and potato/corn compound yield, as the objective function to build regression mode with photosynthetic rate of potato and corn, transmittance, combined with the regression model can be used to guide agricultural production and improve the application of theoretical research value. The main results of this test are as follows:1.In the potato yield components, the influence of the number of lines has the strongest influence on potato yield and has a positive correlation, relay intercropping with four rows potato and two rows corn has the maximum production, the second is small spacing of potato, the high-yielding with the small spacing is40.99cm, spacing and density on the yield of potato has the same influence, selected space47.64cm, potato density of3676plants/667m2, yield of2574.42kg/667m2; Satisfy the equation between the potato yield and factor: Y=2409.23+126.65042X1+279.20X2+331.93X3+124.15875X4. In the maize yield components, the influence of spacing has the strongest influence on maize yield, selection of planting with49.34cm, the second is maize density, selection of plants3446.18/667m2, potato density selected plants/3330.25/667m2, yield of502.51kg/667m2, rows and maize yield have negative correlations, selection planting of two rows of potato with two rows of corn, spacing and potato density, potato small spacing and line numbers, potato density and corn density interaction; Satisfy the equation between the maize yield and factor: Y=515.86+27.29X1-19.27X3-19.54X4+21.84X5-15.19X4^2-17.94X1X4-27.56X2X3+13.58X4X5. Test study of composite production showed that the spacing has the strongest influence in compound production, high yield and composite production spacing is50.80cm, followed by maize density, appropriate selection of plants/3456.10/667m2, again is the potato small spacing, selection planting of39.67cm, number of rows of has the weakest influence in composite production, it is ok planting three rows of potato with two rows of maize or four rows of potato with two rows of maize, composite yield of1017.40kg/667m2; Satisfy the equation between the composite production and factor: Y=997.71+52.625X1+45.70X2+47.12X3+33.44X5-22.86X1X4-24.96X2X3.2. Through the correlation analysis with potato yield, maize yield, composite products with potato photosynthetic rate, photosynthetic rate of maize, light transmittance, potato and corn plant height, dry matter content of potato, potato chlorophyll content, chlorophyll content of maize, the potato yield and photosynthetic extremely significant positive correlation, potato and maize photosynthetic significantly negative correlation, and light transmittance was significantly positive correlation and negative correlation with chlorophyll content of maize significantly; maize yield and maize photosynthetic extremely significant positive correlation, and negatively correlated to the potato plant salience, and potato chlorophyll content was significantly negative correlation; Composite production and potato photosynthesis extremely significant positive correlation, and light transmittance is significantly negative correlation, and chlorophyll content of maize significantly negative correlation.3.The simulation studies for potato and maize photosynthetic rate, light transmittance and composite production indicated that photosynthetic rate increase to compound potato crop production, corn photosynthetic rate increase for composite production output, and light transmittance and composite production relationship is on the contrary, which satisfies equation: Ycomposite production=285.32+28.37x potato photosynthetic efficiency+24.23x maize photosynthetic efficiency-0.99x light transmittance. |
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