| 曹阳,李撑娟,王辉,代允超,孙本华,张东明,王晓晶,吕家珑.施加钝化剂及叶面肥对大田小麦-玉米轮作Cd吸收转运的影响[J].农业环境科学学报,2023,42(2):319-326. |
| 施加钝化剂及叶面肥对大田小麦-玉米轮作Cd吸收转运的影响 |
| Effects of passivating agents and foliar fertilizers on cadmium uptake and transport in wheat-maize rotation |
| 投稿时间：2022-07-20 |
| DOI：10.11654/jaes.2022-0730 |
| 中文关键词: 大田 小麦玉米轮作 中轻度Cd污染 安全利用 吸收转运 |
| 英文关键词: field wheat and corn rotation moderate and mild cadmium pollution safe utilization absorption and transportation |
| 基金项目:国家自然科学基金项目（42007303）；陕西省农业科技创新驱动项目（NYKJ-2021-YL（XN）19）；黄土高原土壤侵蚀与旱地农业国家重点实验室项目（A314021402-2021012） |
| 作者 | 单位 | E-mail | | 曹阳 | 西北农林科技大学资源环境学院, 农业农村部西北植物营养与农业环境重点实验室, 陕西 杨凌 712100 | | | 李撑娟 | 陕西省咸阳市土壤肥料工作站, 陕西 咸阳 712000 | | | 王辉 | 陕西省咸阳市土壤肥料工作站, 陕西 咸阳 712000 | | | 代允超 | 西北农林科技大学资源环境学院, 农业农村部西北植物营养与农业环境重点实验室, 陕西 杨凌 712100 | | | 孙本华 | 西北农林科技大学资源环境学院, 农业农村部西北植物营养与农业环境重点实验室, 陕西 杨凌 712100 | | | 张东明 | 西北农林科技大学资源环境学院, 农业农村部西北植物营养与农业环境重点实验室, 陕西 杨凌 712100 | | | 王晓晶 | 西北农林科技大学资源环境学院, 农业农村部西北植物营养与农业环境重点实验室, 陕西 杨凌 712100 | | | 吕家珑 | 西北农林科技大学资源环境学院, 农业农村部西北植物营养与农业环境重点实验室, 陕西 杨凌 712100 | ljlll@nwsuaf.edu.cn |
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| 中文摘要: |
| 为研究施加钝化剂、叶面肥对大田小麦-玉米轮作Cd吸收转运的影响，实现安全利用类耕地农作物的安全生产，通过大田轮作试验的方式，选用小麦秸秆生物炭、钙镁磷肥为土壤钝化剂，叶面硒肥为叶面阻隔剂，在田间共设置6个处理：小麦和玉米常规种植（CK）、基施生物炭（B）、基施钙镁磷肥（P）、叶面喷施硒肥（F）、叶面喷施硒肥的同时基施生物炭（BF）、叶面喷施硒肥的同时基施钙镁磷肥（PF）。小麦和玉米成熟后对其籽粒、秸秆、根系3部分的Cd含量进行检测，并对耕地土壤的pH值、有效态Cd、全量Cd进行测定。结果表明：与CK处理相比，小麦和玉米各处理土壤pH值有不同程度的升高，其中B处理和BF处理会显著提升土壤pH值；小麦和玉米各处理土壤中全量Cd无明显变化； P处理和PF处理可显著降低土壤有效态Cd含量。与CK处理相比，各处理农作物籽粒中Cd含量均有不同程度的降低，且叶面阻隔联合土壤钝化技术（BF、PF）的效果更好。较CK处理，PF处理小麦和玉米籽粒Cd含量下降最明显，降幅分别为39.91%、43.51%，BF处理小麦和玉米籽粒Cd含量分别下降了22.58%、33.53%，F、B处理和P处理变化较小，降低效果表现为B处理 |
| 英文摘要: |
| Wheat straw biochar and calcium magnesium phosphate fertilizer were selected as experimental soil passivation agents through field rotation experiments. These were used to study the effect of applying passivating agents and foliar fertilizers on cadmium absorption and transport in a field wheat-maize rotation and to realize the safe production of crops and use of cultivated land. Six treatments were set in the field:conventional wheat and corn planting(CK), basal biochar application(B), basal calcium magnesium phosphate fertilizer application(P), foliar selenium fertilizer spraying(F), basal biochar application with foliar selenium fertilizer(BF), and basal calcium magnesium phosphate application with foliar selenium fertilizer(PF). The cadmium content of wheat and maize grains, straws, and roots were detected after maturity, and the pH, available Cd, and total Cd of the cultivated soil were determined. The results show that compared with the CK treatment, the soil pH values of the wheat and maize treatments increased to different degrees, among which the B and BF treatments significantly increased the soil pH; the total amount of Cd in the wheat and maize treatments did not change significantly; P and PF treatment can significantly reduce available soil Cd content. Compared with the CK treatment, the Cd content in the grains of each treatment decreased to varying degrees, and the effect of foliar barrier combined with soil passivation technology(BF, PF) was better. Compared with CK treatment, the Cd content of wheat and maize grains in PF treatment decreased the most, with a decrease rate of 39.91% and 43.51%, respectively. The Cd content of wheat and maize grains in the BF treatment decreased by 22.58% and 33.53%, respectively, and the changes in the F, B, and P treatments were not significant. The reduction effect can be expressed as B |
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