Response of Water Radiation Utilization of Summer Maize to Planting Density and Genotypes in the North China Plain
Increasing the planting density of summer maize to improve the utilization efficiency of limited soil and water resources is an effective approach; however, how the leaf water-use efficiency (WUE<sub>L</sub>), yield, and RUE respond to planting density and genotypes remains unclear. A 2-...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-12-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/13/1/68 |
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| author | Zhendong Liu Shiyu Wei Ming Li Qingfen Zhang Rui Zong Quanqi Li |
| author_facet | Zhendong Liu Shiyu Wei Ming Li Qingfen Zhang Rui Zong Quanqi Li |
| author_sort | Zhendong Liu |
| collection | DOAJ |
| description | Increasing the planting density of summer maize to improve the utilization efficiency of limited soil and water resources is an effective approach; however, how the leaf water-use efficiency (WUE<sub>L</sub>), yield, and RUE respond to planting density and genotypes remains unclear. A 2-year field experiment was performed in the North China Plain (NCP) to investigate the effects of planting density (high, 100,000 plants ha<sup>−1</sup>; medium, 78,000 plants ha<sup>−1</sup>; and low, 56,000 plants ha<sup>−1</sup>) and genotypes (Zhengdan 958 and Denghai 605) on the leaf area index (LAI), photosynthetic characteristics, dry-matter accumulation, WUE<sub>L</sub>, and RUE of maize. The objective was to explore the effect of density and genotype on the WUE<sub>L</sub> and RUE of maize. Increasing planting density boosted LAI, light interception, dry-matter accumulation, and spike number but reduced the chlorophyll content, net photosynthetic rate, transpiration rate, and 1000-kernel weight. Both high and low planting densities were averse to RUE and yield. Zhengdan 958 increased the WUE<sub>L</sub> by 19.45% compared with Denghai 605, but the RUE of Denghai 605 was 18.19% higher than Zhengdan 958, suggesting that Denghai 605 had a greater production potential as the planting density increased. Our findings recommend using 78,000 plants ha<sup>−1</sup> as the planting density with Denghai 605 to maintain summer maize yields in the NCP. |
| first_indexed | 2024-03-09T13:52:16Z |
| format | Article |
| id | doaj.art-a0a2bead0b674443abdbf6ebbca3f052 |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-09T13:52:16Z |
| publishDate | 2022-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Agronomy |
| spelling | doaj.art-a0a2bead0b674443abdbf6ebbca3f0522023-11-30T20:48:28ZengMDPI AGAgronomy2073-43952022-12-011316810.3390/agronomy13010068Response of Water Radiation Utilization of Summer Maize to Planting Density and Genotypes in the North China PlainZhendong Liu0Shiyu Wei1Ming Li2Qingfen Zhang3Rui Zong4Quanqi Li5College of Water Conservancy and Civil Engineering, Shandong Agricultural University, Tai’an 271018, ChinaCollege of Water Conservancy and Civil Engineering, Shandong Agricultural University, Tai’an 271018, ChinaCollege of Water Conservancy and Civil Engineering, Shandong Agricultural University, Tai’an 271018, ChinaCollege of Water Conservancy and Civil Engineering, Shandong Agricultural University, Tai’an 271018, ChinaCollege of Water Conservancy and Civil Engineering, Shandong Agricultural University, Tai’an 271018, ChinaCollege of Water Conservancy and Civil Engineering, Shandong Agricultural University, Tai’an 271018, ChinaIncreasing the planting density of summer maize to improve the utilization efficiency of limited soil and water resources is an effective approach; however, how the leaf water-use efficiency (WUE<sub>L</sub>), yield, and RUE respond to planting density and genotypes remains unclear. A 2-year field experiment was performed in the North China Plain (NCP) to investigate the effects of planting density (high, 100,000 plants ha<sup>−1</sup>; medium, 78,000 plants ha<sup>−1</sup>; and low, 56,000 plants ha<sup>−1</sup>) and genotypes (Zhengdan 958 and Denghai 605) on the leaf area index (LAI), photosynthetic characteristics, dry-matter accumulation, WUE<sub>L</sub>, and RUE of maize. The objective was to explore the effect of density and genotype on the WUE<sub>L</sub> and RUE of maize. Increasing planting density boosted LAI, light interception, dry-matter accumulation, and spike number but reduced the chlorophyll content, net photosynthetic rate, transpiration rate, and 1000-kernel weight. Both high and low planting densities were averse to RUE and yield. Zhengdan 958 increased the WUE<sub>L</sub> by 19.45% compared with Denghai 605, but the RUE of Denghai 605 was 18.19% higher than Zhengdan 958, suggesting that Denghai 605 had a greater production potential as the planting density increased. Our findings recommend using 78,000 plants ha<sup>−1</sup> as the planting density with Denghai 605 to maintain summer maize yields in the NCP.https://www.mdpi.com/2073-4395/13/1/68chlorophyll content indexleaf area indexleaf water-use efficiencyradiation-use efficiencyyield |
| spellingShingle | Zhendong Liu Shiyu Wei Ming Li Qingfen Zhang Rui Zong Quanqi Li Response of Water Radiation Utilization of Summer Maize to Planting Density and Genotypes in the North China Plain Agronomy chlorophyll content index leaf area index leaf water-use efficiency radiation-use efficiency yield |
| title | Response of Water Radiation Utilization of Summer Maize to Planting Density and Genotypes in the North China Plain |
| title_full | Response of Water Radiation Utilization of Summer Maize to Planting Density and Genotypes in the North China Plain |
| title_fullStr | Response of Water Radiation Utilization of Summer Maize to Planting Density and Genotypes in the North China Plain |
| title_full_unstemmed | Response of Water Radiation Utilization of Summer Maize to Planting Density and Genotypes in the North China Plain |
| title_short | Response of Water Radiation Utilization of Summer Maize to Planting Density and Genotypes in the North China Plain |
| title_sort | response of water radiation utilization of summer maize to planting density and genotypes in the north china plain |
| topic | chlorophyll content index leaf area index leaf water-use efficiency radiation-use efficiency yield |
| url | https://www.mdpi.com/2073-4395/13/1/68 |
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