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通过水培试验种植早晚稻各8个品种,测定根系泌氧速率和根系通气组织大小及面积比例,比较其差异性并分析相关性,为提高水稻根系泌氧能力提供理论基础依据。结果表明:单株根系泌氧速率与根系通气组织的结构(空腔)大小和根系形成通气组织的面积比例均呈显著正相关(P<0.01);通气组织的结构(空腔)大小与单根根系泌氧速率、单位质量根系泌氧速率呈正相关(P<0.05);根系形成通气组织的面积比例与单根根系泌氧速率呈正相关(P<0.05),然而与单位质量根系泌氧速率无相关性。水稻根系通气组织结构(空腔)的大小和形成通气组织的面积比例均与水稻根系泌氧能力正相关,通气组织发达,根系泌氧能力越强。
Eight varieties of early and late rice were planted in hydroponic culture. The rate of oxygen secretion in root system and the proportion and area of root ventilation tissue were determined. The differences were analyzed and the correlations were analyzed. The results provided the theoretical basis for improving the oxygen production capacity in rice roots. The results showed that the rate of oxygen secretion per plant root was significantly positively correlated with the size of the structure (cavity) of root ventilation and the area of ventilation formed by the root (P <0.01). The size of the structure (cavity) (P <0.05). The area proportion of root ventilation system was positively correlated with the oxygen secretion rate of single root (P <0.05), however, the rate of oxygen secretion per unit mass of roots No correlation. Both the size of the airway tissue (cavity) and the area of aeration tissue in rice root system were positively correlated with the oxygen secretion ability of rice roots, and the ventilation tissue was developed and the root oxygen secretion ability was stronger.