论文部分内容阅读
潜育性稻田是我国南方稻区的低产土壤类型,该类土壤还原性强,矿质营养失调,尤以亚铁(Fe~++)过量积累,对水稻生长发育产生不良的逆境胁迫作用。种植耐潜育性土壤的水稻品种,则是简便、经济有效地提高稻谷产量的重要途径之一。本文采用不同浓度的亚铁营养液,人工模拟潜育性土壤逆境胁迫试验方法,对两个早籼稻品种(组合)生长发育状况进行了较系统的动态观测,诸如亚铁对水稻根系发育、稻株生育与干物质积累,光合强度及其产量构成要素的影响,为进一步进行大田筛选耐潜育性土壤的水稻品种提供试验依据。
Fertile rice fields are low-yielding soil types in the southern rice area of China. These soil types have strong reducibility and mineral nutrient imbalance, especially over-accumulation of ferrous iron (Fe ~ ++), which has adverse adverse stress effects on the growth and development of rice. It is one of the important ways to increase paddy yield economically and effectively by planting paddy varieties resistant to poor fertility. In this paper, different concentrations of ferrous nutrient solution and artificial simulated soil fertility stress test were used to systematically observe the growth and development of two indica rice varieties (combinations), such as the effect of ferrous iron on root development, The effects of plant growth and dry matter accumulation, photosynthetic capacity and yield components were analyzed to provide experimental basis for further field screening of rice varieties resistant to the potential of fertility.