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本试验对机插水稻根系的生长特点作了初步研究与分析。机插水稻的发根量前期一般较少,随生育的渐进而增强,穗分化之后可接近对照的发根水平,根干重至后期平均较对照高20.3％。根系分布较浅,占根重80％的根系集中于0～5厘米的表层土中,6～20厘米下层土内的根重量仅为对照的二分之一左右。根密度与对照相比,表现为前期低,中后期较高。根冠比值在整个生育过程中以穗分化期最高,但各个时期均高于对照。后期根系生理活性较强,伤流量、根活性、氧化力、氧化量均高于对照,成熟期分别提高9.4％、5％、4.4％和9.4％。
In this experiment, the growth characteristics of rice-inserted rice were preliminarily studied and analyzed. The amount of root growth of the inserted rice was generally less in the early stage, which increased with the progress of reproduction. After the spike differentiation, the rooting level approached to the control, and the root dry weight was 20.3% higher than the control in the later period. Root system is shallow distribution, accounting for 80% of the root weight of roots concentrated in 0 to 5 cm in the top soil, 6 ~ 20 cm in subsoil root weight is only about one-half of the control. Root density compared with the control, the performance of early low, higher in the late. The ratio of root to shoot was the highest in the spike differentiation during the whole reproductive period, but it was higher in each period than the control. At the later stage, the physiological activities of the root system were stronger than those of the control and the injury flow rate, root activity, oxidation and oxidation were all higher than those of the control. The maturity increased by 9.4%, 5%, 4.4% and 9.4% respectively.