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采用裂区试验设计,密度为主区,设置4个密度(9.0万、10.5万、12.0万、13.5万株/hm~2)处理,副区为3个杂交糯高粱品种,共计12个处理,小区面积14m~2,3次重复。研究杂交糯高粱在不同密度条件下群体库源特征的变化。研究结果表明,各生育时期的叶面积指数和源生产能力均与密度显著相关,增加种植密度是增源的关键措施,增加密度可在一定程度上增加群体有效库容量,因此,合理的密植是实现库源协调的关键措施。在高密度条件下,增加穗粒数是进一步提高有效库容量的关键措施。选用类似于泸糯8号这种源足、库大的品种,合理增加种植密度,是四川东南部杂交糯高粱进一步高产的有效途径。
Using split-plot experimental design, the density of the main area, set four density (90,000, 105,000, 120,000, 135,000 plants / hm ~ 2) treatment, the deputy district for the three hybrid glutinous sorghum varieties, a total of 12 treatments, Area of 14m ~ 2,3 times repeated. Study on Population Source Characteristics of Hybrid Sorghum Hybrids under Different Density Conditions. The results showed that the leaf area index and source productivity of each growth period were significantly related to the density. Increasing the planting density was the key measure to increase the source. Increasing the density could increase the effective stock capacity of the population to a certain extent. Therefore, Key Measures to Achieve the Coordination of Library and Source. Under the conditions of high density, increasing the number of grains per spike is the key measure to further increase the effective storage capacity. It is an effective way to further increase the yield of hybrid sorghum in southeastern Sichuan by selecting the source footing and large stocking varieties similar to Lu Nuo No.8 to reasonably increase the planting density.