在玉米/大豆交叉作物下的红土中,菌介导激活的机制
Zhao Ti-Lei1, Lin Yu-Hong1, Zhu Xing-Kui1
1College of Resources and Environmental Science, Yunnan Agricultural University, Kunming 650201, China.
Ying yong sheng tai xue bao = The journal of applied ecology
|December 25, 2025
概括
玉米/大豆交叉种植显著提高了玉米产量和红土中的土壤 (P) 激活. 这是通过增强菌根殖民和性酸酶活性来实现的,从而增加了敏感的P池.
科学领域:
- 农业科学 农业科学
- 土壤科学 土壤科学
- 微生物学 微生物学
背景情况:
- 菌根对于土壤 (P) 转化至关重要.
- 间作物和酸盐的应用会影响树根球菌根的特征和酶活性.
- 红色土壤中因杂交作物引起的P激活的菌根介导机制尚不清楚.
研究的目的:
- 分析玉米/大豆交叉种植对玉米产量,土壤P分量,菌根植民和树根球性酸酶活性 (APA) 的影响.
- 探索杂交作物的菌根介导作用,促进红土中的活化.
- 在不同的酸盐应用速率下研究这些效应.
主要方法:
- 一个为期7年的实地实验,比较玉米单一栽培和玉米/大豆杂种.
- 分析了土壤P分数,菌根植民 (速率,菌根密度,子密度),总质素和根球APA.
- 利用随机森林和结构方程建模来确定关键因素和机制.
主要成果:
- 间作物显著增加了玉米产量,可负责任的P池,P激活和菌根参数 (殖民化,菌密度,子密度,谷蛋白).
- 树枝球APA也通过杂交作物显著增强.
- 随机森林确定了受影响的P池和特定的P分量作为P激活的关键驱动因素,受菌根因子和APA的影响.
- 结构方程建模证实,杂交作物通过增强的菌根殖民和APA促进P激活.
结论:
- 玉米/大豆交叉种植有效地提高了红土中的土壤活性.
- 菌根殖民和根球性酸酶活性是这一过程的关键媒介.
- 这些发现为优化交叉作物系统提供了洞察力,以提高的可用性和作物生产率.
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