东北地区水田土壤下层土与水稻根系生长分布关系

发布时间：2018-04-21 22:34

本文选题：水田土壤 + 下层土　；参考：《土壤通报》2017年01期

【摘要】：为了探究东北地区水田土壤下层土与水稻根系生长及产量的关系,采用微区试验方法,研究白浆土、黑土、草甸土三种类型水田土壤下层土对水稻根系生长和产量的影响。研究结果表明:不同类型土壤间水稻根系分布密度差异显著,其中黑土草甸土白浆土,且有下层土处理无下层土处理;水稻总根长、根系直径、根尖数在不同类型土壤间差异极显著,不同土壤间表现规律不一致,但各类土壤均为有下层土处理高于无下层土处理;水稻根系总体积、表面积、干重、根冠比、垂直根长各项指标均与水稻产量呈正相关性;比较不同类型土壤水稻产量为:黑土白浆土草甸土,下层土对水稻产量贡献率分别为:黑土32.97%、白浆土6.32%、草甸土10.59%。
[Abstract]:In order to explore the relationship between paddy soil subsoil and rice root growth and yield in Northeast China, the effects of three types of paddy soil on rice root growth and yield were studied by using microregion test method, including white soil, black soil and meadow soil. The results showed that there were significant differences in root distribution density among different types of soils, among which the black soil meadow soil and alpine soil were not treated with lower soil, the total root length, root diameter, root diameter, total root length, root diameter, total root length and root diameter of rice were significantly different from each other. The number of root tip was significantly different among different types of soil, but the root total volume, surface area, dry weight, root / shoot ratio of all kinds of soils were higher than that of non-subsoil treatment, and the root volume, surface area, dry weight and ratio of root to shoot were different among different soils. There was a positive correlation between the vertical root length and rice yield, and the rice yield of different types of soil was compared as follows: black soil, clay soil, meadow soil, and lower soil contributed to rice yield, respectively: black soil 32.97, white soil 6.32, meadow soil 10.59.
【作者单位】：黑龙江省农业科学院土壤肥料与环境资源研究所;黑龙江省土壤环境与植物营养重点实验室;
【基金】：公益性行业专向(201503118-04) 黑龙江省博士后基金(LBH-Z13189) 黑龙江省自然科学基金(D2015005) 院科技创新项目(2014QN012)资助
【分类号】：S511;S154.4

【参考文献】