Effects of Titanium Gypsum Produced by Sulfuric Acid Method as Soil Conditioner on Rape Seedlings

WANG Xiaoqi; YAO Yuanyuan; CHEN Baocheng; LIU Zhiguang; ZHU Jiahui; ZHOU Huamin; LIANG Hai; CHEN Jianqiu

doi:10.13870/j.cnki.stbcxb.2018.04.053

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Effects of Titanium Gypsum Produced by Sulfuric Acid Method as Soil Conditioner on Rape Seedlings

更新时间：2025-03-12

- Effects of Titanium Gypsum Produced by Sulfuric Acid Method as Soil Conditioner on Rape Seedlings
- Vol. 32, Issue 4, Pages: 333-338(2018)
- 作者机构：
  
  1. 土肥资源高效利用国家工程实验室, 山东农业大学资源与环境学院,山东,泰安,271018
  2. 养分资源高效开发与综合利用国家重点实验室, 山东临沭,276000
- 作者简介：
- 基金信息：
- DOI：10.13870/j.cnki.stbcxb.2018.04.053
  CLC：
- Published：2018
- 稿件说明：
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WANG Xiaoqi, YAO Yuanyuan, CHEN Baocheng, et al. Effects of Titanium Gypsum Produced by Sulfuric Acid Method as Soil Conditioner on Rape Seedlings[J]. 2018, 32(4): 333-338.
DOI：

WANG Xiaoqi, YAO Yuanyuan, CHEN Baocheng, et al. Effects of Titanium Gypsum Produced by Sulfuric Acid Method as Soil Conditioner on Rape Seedlings[J]. 2018, 32(4): 333-338. DOI： 10.13870/j.cnki.stbcxb.2018.04.053.

摘要

为研究钛白粉生产过程中经无害化处理的副产品钛石膏作为土壤调理剂的施用效果及安全性，试验对供试钛石膏通过成分鉴定—土柱淋溶—盆栽种植的方式，研究了钛石膏和钛石膏淋溶液中的有害元素含量以及钛石膏与土壤不同比例掺混后对油菜生长、产量和功能叶光合速率影响。结果表明：钛石膏主要成分为CaSO4和Fe2O3，固体中的重金属含量均符合国家安全标准。钛石膏淋溶液中含有较少量的Ca2+、Mg2+，不含其他有害物质，施用后不会随雨水和灌溉污染土壤和地下水。随着钛石膏添加比例的增加，油菜产量呈先增高后降低的趋势，过量的钛石膏施用会抑制油菜的生长。钛石膏与土壤按照1∶4体积比混合施用后效果最好，与常规土壤栽培方式相比，油菜出苗20天后功能叶蒸腾速率提高了11.86%；出苗30天后功能叶SPAD值增加了4.33%，收获时油菜株高提高了12.97%，产量增加了14.08%。相关性分析显示，油菜产量（y）与钛石膏添加比例（x）的关系为y=0.0001x3-0.0212x2+0.6966x+41.815（R2=0.999 4），综合考虑函数及其他因素，在实际生产中若每公顷施用300 t的钛石膏能起到最佳增产效果。

Abstract

In order to study the application effect and safety of the titanium gypsum with harmless treatment as a soil conditioner

we employed a systematic test of ingredients identification

soil column leaching

and potted experiment to study the content of harmful elements in titanium gypsum and titanium gypsum leaching solution

and to study the effect of gypsum on the growth

yield and leaf photosynthetic rate of rape seedlings simultaneously. Results showed that the main elements in leachate were calcium sulfate and iron oxide

all content of heavy metals in titanium gypsum were below the national safety standards

the presence of elements in the leachate did not contaminate the soil and groundwater after application. With the increase proportion of titanium gypsum

rape seedlings production increased firstly and then decreased

excessive titanium gypsum could inhibit the growth of rape seedlings. Titanium gypsum showed the best effect at the ratio of 1:4 to the soil. The leaf transpiration rate increased by 11.86% after 20 days of seedling emergence as compared to that of conventional soil cultivation. Thirty days after seedling emergence

the plant photosynthesis

plant height

and biomass increased by 4.33%

12.97%

and 14.08% than those of the conventional soil cultivation

respectively. Correlation analysis showed that the relationship between yield (y) of rape seedlings and the addition ratio (x) of titanium gypsum was y=0.0001x3-0.0212x2+0.6966x+41.815 (R2=0.999 4). In actual production

the application of 300 tons of titanium gypsum per hectare should be the best application dose to improve the crop productivity.

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