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籽料重量; 在这二年中,记录中的籽粒产量有很大差别,这是因为所采用品种不同。品种Cm206自交系,潜在产量很低,所以1988—1989这一季玉米产量几乎是第二年的一半。对二年产量资料一起分析可以发现,灌溉措施与年份之间存在着明显的互作。然而,在两年中灌溉六次区比灌溉四次区产量高得多,而1988—1990年增产幅度较小。这可能是1988—1989年吐丝期降了21.2mm雨水,作物得到了所需要的水分。 秸秆覆盖或叶面使用蒸腾抑制剂,不论是反光型(高岭土)还是气孔关闭型(草不绿)同样比不采取措施所得产量高。将秸秆和高岭土并用或与草不绿并用比秸秆同其他抑制蒸腾剂并用效果好。通过秸秆覆盖、抑制表层蒸腾,除减少水分损失外,也能更好地利用灌溉水。
The weight of the seed material; in the two years, the grain yield in the record is very different because of the different varieties used. The variety Cm206 inbred lines, the potential yield is very low, so the 1988-1989 season corn production is almost half of the second year. An analysis of the two-year yield data shows that there is a clear interaction between irrigation measures and years. However, the yield was significantly higher in the six irrigation districts over the two years than in the four irrigation districts, with a smaller increase in 1988-1990. This may be a 21.2mm rain drop during the silk spinning period 1988-1989, when the crop receives the water it needs. Straw mulching or foliar use of transpiration inhibitors, either retroreflective (kaolin) or stomatal-closed (irrigating green), also yields more than if no measures were taken. The use of straw and kaolin or with the grass is not green with straw and other inhibitory transpiration agent with good effect. Through the straw cover, inhibiting transpiration, in addition to reducing water loss, but also make better use of irrigation water.