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本试验在贵州大学教学试验场进行 ,研究了高山生态型与平原生态型玉米品种 (共 7个 )的物质生长特性 ,结果表明 :( 1)两类型品种的生物产量的差异主要出现在拔节以后 ,生物产量高的品种 ,籽粒产量也高。两者的相关性达极显著 (r =0 .9881 ) ,( 2 )抽雄吐丝后光合产物对产量的贡献大于运转量的贡献 ,然而产量却随着运转量的增加而提高 ,呈正相关 ,达极显著 (r =0 .932 7 ) ,运转量平原生态品种高于高山生态品种。 ( 3)灌浆速度高山玉米快于平原玉米。 ( 4)群体生长率在玉米生长过程中出现 2次高峰 ,分别在拔节—大喇叭口期和乳熟—蜡熟期。两生态型玉米品种的净同化率不同 ,乳熟期—蜡熟期 ,高山生态型玉米低于平原生态型玉米
The experiment was carried out in Guizhou Experimental Teaching Site. The physical growth characteristics of alpine ecotypes and plain ecotypes of maize (total 7) were studied. The results showed that: (1) The differences in biomass between two types of cultivars occurred mainly after jointing , High biological yield varieties, grain yield is also high. The correlation between them was extremely significant (r = 0.8888). (2) The contribution of photosynthate to the yield was greater than that of the operation after sprouting, but the yield increased with the increase of the operation, Reaching extremely significant (r = 0.9327). The plain ecological type of operation volume was higher than the alpine ecological variety. (3) Filling speed Alpine corn is faster than plain corn. (4) The growth rate of population showed two peaks during the growth of maize, respectively at jointing-bolus stage and milk-ripening-waxy stage. The net assimilation rate of two ecotype maize varieties is different, milky maturity - wax maturity, alpine ecotype maize is lower than plain ecotype maize