Integrated effect of irrigation rate and plant density on yield, yield components and water use efficiency of maize

被引：1

作者：

Tolimir, Miodrag ^{[1
]}

Kresovic, Branka ^{[1
]}

Gajic, Katarina ^{[2
]}

Andelkovic, Violeta ^{[1
]}

Brankov, Milan ^{[1
]}

Dligalic, Marijana ^{[3
]}

Gajic, Bosko ^{[2
]}

机构：

[1] Maize Res Inst, Belgrade, Serbia

[2] Univ Belgrade, Fac Agr, Inst Soil & Reclamat, Belgrade, Serbia

[3] Univ Nis, Fac Agr, Nish, Serbia

来源：

PLANT SOIL AND ENVIRONMENT | 2024年 / 70卷 / 08期

关键词：

sprinkler irrigation; deficit irrigation; water stress; Zea mays L; GRAIN-YIELD; DEFICIT IRRIGATION; PRODUCTIVITY; ENVIRONMENT; SPRINKLER;

D O I：

10.17221/155/2024-PSE

中图分类号：

S [农业科学];

学科分类号：

09 ;

摘要：

We investigated, under field conditions and during four years (2018-2021) the effects of five irrigation levels (T1: 100% of crop water requirement; T2: 80% of T1; T3: 60% of T1; T4: 40% of T1, and T5: 0% of T1 - rainfed) in interaction with three planting densities (PD1: 54 900, PD2: 64 900, and PD3 75 200 plant s/ha) on the yield, yield components and water use efficiency (WUE) of maize in Srem, Serbia. The results indicate a large year-to-year variability, mainly due to the total amount and distribution of rainfall. Water regime and PD interacted significantly. Irrigation increased grain yield 28, 34, 30 and 18% for treatments T1, T2, T3 and T4, respectively, compared to the T5; and significantly influenced the yield components. Planting density had significantly lower effects on grain yield compared to irrigation (+1.4-1.8%). WUE is maximised (3.436 kg/m 3 ) at T4 under 75 200 plants/ha. Grain yield and WUE increased significantly with increasing PD, while the number of grains per ear and the weight of 1 000 grains decreased with increasing PD. In conclusion, limited irrigation at T2 under PD2 may be a viable method to maximise production efficiency and maize yield under the environmental conditions of this study and at sites with similar soil and climatic conditions.

引用

页码：475 / 482

页数：8

共 25 条

[1] Optimized Nitrogen Rate, Plant Density, and Regulated Irrigation Improved Grain, Biomass Yields, and Water Use Efficiency of Maize at the Oasis Irrigation Region of China [J].