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利用盆栽试验,在控制水肥的基础上,研究冬小麦群体库源比及其与产量的关系,研究表明:水分适宜时,经济产量随着生物产量的增加而增加,随着氮肥施用的增加,经济系数呈现上升趋势,而在重度缺水情况下,增施氮肥对生物产量几乎没有影响,而经济产量在N1时达到最大。粒叶比是衡量库源协调的重要指标之一,单位叶面积负荷量(粒数cm-2叶)和单位叶面积有效生产量(粒重cm-2叶)之间表现正相关,通过水肥配合,建立适宜的光合叶面积,增加结实数(库容),提高粒重(库的充实度)是获得高产的途径。
Based on the control of water and fertilizer, the relationship between the source and sink ratio and yield of winter wheat was studied by pot experiment. The results showed that when the water was suitable, the economic yield increased with the increase of biological yield. With the increase of nitrogen fertilizer application, the economy The coefficient shows an upward trend, while in the case of severe water shortage, nitrogen application has little effect on the biomass yield, and economic output reaches the maximum at N1. The grain-leaf ratio is one of the important indexes to evaluate the coordination of the source and sink. The correlation between the unit leaf area load (grain number cm-2 leaf) and the unit leaf area effective production (grain weight cm-2 leaf) With the establishment of appropriate photosynthetic leaf area, increase the number of strong (storage capacity), increase grain weight (library fullness) is the way to obtain high yield.