如何整理数据和写论文.doc

Uptake of Cd and Pb by two Rice Cultivars Under Different Cd Level s in two Soils Differing inS urface C harge P roperties Heavy metal pollution in agricultural farmland has e a serious problem in many parts of the world , and it produces serious threatens to human health. Our study showed that great differences existed among the rice cultivars in the uptake of Cd and bioavailability of Cd and Pb in different soil was also different. T here was the same trend of dynamics for Cd and Pb uptak e in rice cultivars. The difference of uptake heavy metal existed from the seedling stage . So it is possible to select the cultivars which accumulated lower Cd and Pb at the seedling stage. The uptake and accumulation of Cd in rice were correlated with Pb; spiking Cd could enhance the uptake of Pb, implying that some interactions existed in absorption and translocation between Cd and Pb, which is worthy of further investigation. 一、深入理解布置实验的意图 1, 当前科学和社会正在关注或急需解决的问题: 当前关注的重金属食物安全性及其控制: 2, 研究的热点与及其进展:重金属生物有效性,基因型差异,土壤化学影响,土壤污染效应 3, 实验的目的: 土壤- 水稻的工作? 二、本实验的科学性分析 1, 针对欲讨论的问题:重金属,土壤水稻积累行为 2, 资料的完整性: 设计框架 Cd spiking level Soil Rice cultivars Heavy metals 322 Cu Zn Cd Pb 分析内容:重金属量的变化的完整性 3 ,设计的科学性与可靠性 Replication Determination Culture 3, random Standard control Cont. submerging 预处理:空白,对照,干重换算 Biomass Total concentration Total an Growing periods YYY 三、实验结果的初步分析 1, 统计检验: 2 品种在不同的土壤中子粒 Cd Pb 分别存在差异;生物量不仅存在差异品种,也存在于不同的土壤中; 问题: 总吸收量、分配是否存在差异?不同的土壤中的差异的程度如何?对于总吸收量来说,土壤间差异与品种间差异的相对大小? 2,简化现象:做了许多元素, Cu,Zn,Cd Pb, 前两者不突出, Pb 的变异在不同的土壤和不同的品种以及不同的 Cd 处理下变化多样,但差异幅度不如 Cd, 故主要精力放在 Cd 上。既然这种现象因土壤、品种和 Cd 处理而异,将数据简化: ( 1)按不同的土壤、品种和 Cd 处理分别整理( 2)按品种(基因型差异控制)、不同土壤(土壤化学控制)在不施 Cd 和施 Cd 下的变异讨论成熟时试验处理数据的整理结果 Soil type Cultivars Total-biomass g·pot -1 Grain yield g·pot -1G rain Cd mg·kg -1G rain Pb mg·kg -1 No Cd spiking Red soil ± ± ± ± ± ± ± ± Paddy soil ± 1± ± ±