文献类型： 外文期刊

作者： Raza, Muhammad Ali ¹ ; Yasin, Hassan Shehryar ¹ ; Gul, Hina ⁴ ; Qin, Ruijun ⁵ ; Mohi Ud Din, Atta ¹ ; Khalid, Muhammad Hayder Bin ¹ ; Hussain, Sajad ¹ ; Gitari, Harun ⁷ ; Saeed, Amjed ¹ ; Wang, Jun ⁸ ; Rezaei-Chiyaneh, Esmaeil ⁹ ; El Sabagh, Ayman ¹⁰ ; Manzoor, Amir ¹ ; Fatima, Akash ¹¹ ; Ahmad, Shakeel ¹² ; Yang, Feng ² ; Skalicky, Milan ¹³ ; Yang, Wenyu ² ;

作者机构： 1.Islamia Univ Bahawalpur, Natl Res Ctr Intercropping, Bahawalpur, Pakistan

2.Sichuan Agr Univ, Coll Agron, Chengdu, Peoples R China

3.Gansu Acad Agr Sci, Lanzhou, Gansu, Peoples R China

4.Pir Mehar Ali Shah Arid Agr Univ, Natl Ctr Ind Biotechnol, Rawalpindi, Pakistan

5.Oregon State Univ, Hermiston Agr Res & Extens Ctr, Hermiston, OR USA

6.Nanjing Agr Univ, Coll Agr, Nanjing, Peoples R China

7.Kenyatta Univ, Sch Agr & Enterprise Dev, Dept Agr Sci & Technol, Nairobi, Kenya

8.Northwest Univ, Coll Urban & Environm Sci, Shaanxi Key Lab Earth Surface Syst & Environm Carr, Xian, Peoples R China

9.Urmia Univ, Fac Agr, Dept Plant Prod & Genet, Orumiyeh, Iran

10.Siirt Univ, Fac Agr, Dept Field Crops, Siirt, Turkey

11.Muhammad Nawaz Sharif Univ Agr, Inst Plant Breeding & Biotechnol, Multan, Pakistan

12.Bahauddin Zakariya Univ, Dept Agron, Multan, Pakistan

13.Czech Univ Life Sci Prague, Fac Agrobiol Food & Nat Resources, Dept Bot & Plant Physiol, Prague, Czech Republic

关键词： land productivity; water use efficiency; competition; sustainability; economic profit

期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：6.627； 五年影响因子：7.255 ）

ISSN： 1664-462X

年卷期： 2022 年 13 卷

页码：

收录情况： SCI

摘要： Sustainable increases in crop production require efficient use of resources, and intercropping can improve water use efficiency and land productivity at reduced inputs. Thus, in a three-year field experiment, the performance of maize/soybean strip intercropping system differing with maize plant density (6 maize plants m-2, low, D1; 8 maize plants m-2, medium, D2; and 10 maize plants m-2, high, D3) was evaluated in comparison with sole maize or soybean cropping system. Results revealed that among all intercropping treatments, D2 had a significantly higher total leaf area index (maize LAI + soybean LAI; 8.2), total dry matter production (maize dry matter + soybean dry matter; 361.5 g plant-1), and total grain yield (maize grain yield + soybean grain yield; 10122.5 kg ha-1) than D1 and D3, and also higher than sole maize (4.8, 338.7 g plant-1, and 9553.7 kg ha-1) and sole soybean (4.6, 64.8 g plant-1, and 1559.5 kg ha-1). The intercropped maize was more efficient in utilizing the radiation and water, with a radiation use efficiency of 3.5, 5.2, and 4.3 g MJ-1 and water use efficiency of 14.3, 16.2, and 13.3 kg ha-1 mm-1, while that of intercropped soybean was 2.5, 2.1, and 1.8 g MJ-1 and 2.1, 1.9, and 1.5 kg ha-1 mm-1 in D1, D2, and D3, respectively. In intercropping, the land and water equivalent ratios ranged from 1.22 to 1.55, demonstrating that it is a sustainable strategy to improve land and water use efficiencies; this maximization is likely associated with the species complementarities for radiation, water, and land in time and space, which resulted in part from competition avoidance responses that maximize the economic profit (e. g., 1300 US $ ha-1 in D2) over sole maize (798 US $ ha-1) or sole soybean (703 US $ ha-1). Overall, these results indicate that optimizing strip intercropping systems can save 20-50% of water and land, especially under the present scenario of limited resources and climate change. However, further research is required to fully understand the resource capture mechanisms of intercrops in intercropping.