Performance of alfalfa rather than maize stimulates system phosphorus uptake and overyielding of maize/alfalfa intercropping via changes in soil water balance and root morphology and distribution in a light chernozemic soil
Performance of alfalfa rather than maize stimulates system phosphorus uptake and overyielding of maize/alfalfa intercropping via changes in soil water balance and root morphology and distribution in a light chernozemic soil
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苜蓿而不是玉米的性能通过改变土壤水平衡和根系形态以及轻质黑钙土中的分布来刺激系统磷吸收和玉米/苜蓿间作的高产
DOI：
10.1007/s11104-018-3888-y
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发表时间：
2018-11
期刊：
影响因子：
4.9
通讯作者：
Li Zhijian
中科院分区：
文献类型：
--
作者：
Sun Baoru;Gao Yingzhi;Yang Haijun;Zhang Wei;Li Zhijian
目的研究豆科作物为主的禾/豆间作是否能通过根系形态和分布的变化促进磷素吸收和产量提高。方法采用裂区设计，主区设置2个磷素水平处理，副区设置玉米和苜蓿单作或间作处理，连续两年进行田间试验。结果玉米/苜蓿间作条件下，苜蓿的竞争力是玉米的3.0-5.7倍。与单作相比，间作玉米的土壤水分平衡降低了115%，而间作苜蓿的土壤水分平衡提高了469%。间作玉米显著降低根系生长17- 36%，磷吸收降低24%，产量降低12%，而间作苜蓿显著提高根系生长26 - 175%，磷吸收提高208%，产量提高137%，从而显著提高了复合群体的磷吸收和产量。在根系形态和分布特征中，冠根表面积和侧根体积分别是玉米和苜蓿吸磷量的最佳预测因子。结论豆科主导的玉米/苜蓿间作通过改变土壤水分平衡和根系形态与分布，显著提高了磷素吸收和产量，且该系统通过苜蓿而不是玉米实现了超产。
Aims To investigate whether legume-dominated cereal/legume intercropping could facilitate phosphorus acquisition and yield enhancement via changes in root morphology and distribution..Methods A field experiment was conducted for two consecutive years in a split-plot design with main plots treated with two phosphorus levels and subplots treated with maize and alfalfa grown alone or intercropped. .Results In maize/alfalfa intercropping, alfalfa was 3.0–5.7 times more competitive than maize. Compared to monoculture, soil water balance of intercropped maize was significantly reduced by 115%, while that of alfalfa was dramatically enhanced by 469%. Thus, intercropped maize had pronouncedly reduced root growth by 17–36%, phosphorus uptake by 24%, and yield by 12%, but the associated alfalfa had significantly increased root growth by 26%–175%, phosphorus uptake by 208%, and yield by 137%, leading to significantly improved phosphorus uptake and yield of the composite population. Among root morphological and distribution traits, crown root surface area and lateral root volume were the best predictors of maize and alfalfa phosphorus uptake, respectively..Conclusions Legume-dominated maize/alfalfa intercropping can significantly improve phosphorus acquisition and yield production through modifications in.soil water balance and root morphology and distribution, and the system overyielding was performed via alfalfa rather than maize.
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影响因子：
6.7
作者：
Jensen, JR;Bernhard, RH;Nordbo, E
通讯作者：
Nordbo, E
DOI：
10.5539/jas.v5n9p128
发表时间：
2013-08
期刊：
The Journal of Agricultural Science
影响因子：
--
作者：
Guiguo Zhang;Chongyu Zhang;Zaibin Yang;S. Dong
通讯作者：
Guiguo Zhang;Chongyu Zhang;Zaibin Yang;S. Dong
影响因子：
4.9
作者：
Trachsel, Samuel;Kaeppler, Shawn M.;Lynch, Jonathan P.
通讯作者：
Lynch, Jonathan P.
影响因子：
2.7
作者：
Li, L;Sun, JH;Smith, SE
通讯作者：
Smith, SE
多样性通过缺磷土壤的根际磷促进作用提高农业生产力
DOI：
10.1073/pnas.0704591104
发表时间：
2007-07-03
影响因子：
11.1
作者：
Li, Long;Li, Shu-Min;Zhang, Fu-Suo
通讯作者：
Zhang, Fu-Suo