Relationship between stem characters and meteorological factors of Spring Maize in Guizhou
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Abstract:
The main meteorological factors influencing the stem traits of Spring Maize in Guizhou Province and their influence degree were explored, which provided scientific basis for the layout and high-yield cultivation regulation of Guizhou spring maize. Four maize varieties Xianyu 1171, xinzhongyu 801, Jinyu 838 and Xingyu 3 were used as test materials in five maize sub regions of Guizhou Province. The relationship between main meteorological factors and maize stalk traits was studied by means of grey correlation degree and correlation analysis. The results showed that the effective accumulated temperature had the greatest influence on the bending strength and cellulose content. When the effective accumulated temperature was 1293.82 ℃·D and 1470.10℃·D, the maximum values of the bending strength and cellulose were 296.64N and 21.92%, respectively; the sunshine hours had the greatest influence on the length and flattening ratio of internode. When the sunshine hours were 638.55h and 752.14h, the internode length and flattening ratio reached the maximum 50 cm and 0. 092 respectively. The daily average temperature and precipitation had the greatest impact on the puncture intensity and cross-sectional area respectively. When the average temperature was 19.23℃·D, the puncture intensity reached the minimum value, which was 32.53N. When the precipitation was 819.01mm, the cross-sectional area reached the minimum value, which was 4.03cm2.
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