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首页> 外文期刊>American Journal of Plant Sciences >Effect of Moisture Conservation Methods and Plant Density on the Productivity of Two Maize (Zea mays L.) Varieties under Semi-Arid Tropics of Hamelmalo, Eritrea
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Effect of Moisture Conservation Methods and Plant Density on the Productivity of Two Maize (Zea mays L.) Varieties under Semi-Arid Tropics of Hamelmalo, Eritrea

机译：水分保存方法和植物密度对厄瓜多尔半干旱热带地区两个玉米（Zea mays L.）品种生产力的影响

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摘要

The productivity of maize in Eritrea in general and under semi-arid tropics of Hamelmalo in particular is low because of moisture stress. The low moisture content is ascribed to the low and erratic distribution of rainfall, high temperature, lack of suitable varieties, and competition by weeds and low soil fertility. To overcome some of these problems, a field experiment was carried out to assess the effect of moisture conservation methods (MCM) and plant density on the productivity of two maize (Zea mays L.) varieties under semi-arid tropics of Hamelmalo, Eritrea. The experiment was conducted in split-split plot design with three MCM viz tied ridge, ridge and furrow and flat-bed in main plots; two maize varieties viz early local and 04sadve hybrid in sub plots and three plant densities by manipulating the plant to plant distance viz 35 cm, 25 cm and 15 cm at a fixed 75 cm row spacing in sub-sub plots, each replicated thrice. The experiment was focused in addressing the effective moisture conservation techniques, optimum plant density to each variety thus to improve productivity. The crop experienced 10°C to 34.8°C minimum and maximum temperature, respectively and received 429.1 mm total rainfall. The results of the experiment indicated that among all the combinations, 04sadve hybrid variety sown at 75 cm × 25 cm spacing in ridge and furrow method or at 75 cm × 15 cm spacing in tied ridge or flat-bed method and early local variety sown at 75 cm × 15 cm spacing in flat-bed being statistically at par resulted in significantly higher moisture conservation and consequently higher grain yield (4509 kg·ha-1) and higher water use efficiency. It is, therefore, recommended that tied ridge or flat-bed of moisture conservation method at 15 cm plant spacing and 04sadve is preferable to optimize productivity in Hamelmalo area, Eritrea.
机译：由于水分胁迫，厄立特里亚和特别是哈梅尔马洛的半干旱热带地区的玉米生产力普遍较低。水分含量低是由于降雨分布少且不稳定，温度高，缺乏合适的品种以及杂草竞争和土壤肥力低所致。为了克服其中的一些问题，进行了田间试验，以评估水分保护方法（MCM）和植物密度对厄立特里亚Hamelmalo半干旱热带地区两个玉米（Zea mays L.）品种的生产力的影响。该实验是在分割地块设计中进行的，在主要地块中使用三个MCM绑住的垄，垄和犁沟以及平台。通过在子分区中以固定的75 cm行距操纵植物到植物的距离，即35 cm，25 cm和15 cm，将两个玉米品种分别与子田中的早期本地杂交和04sadve杂交，以及三种植物密度，每个重复三次。该实验的重点是解决有效的水分保护技术，为每个品种提供最佳植物密度从而提高生产力。作物的最低温度和最高温度分别为10°C至34.8°C，总降雨量为429.1 mm。试验结果表明，在所有组合中，以垄沟法在75 cm×25 cm处播种，或以垄垄或平板法在75 cm×15 cm处播种04sadve杂交品种，并在早期播种。在统计上，平板床的间距为75 cm×15 cm，具有统计学意义，从而显着提高了水分守恒性，从而提高了谷物产量（4509 kg·ha-1）和更高的水分利用效率。因此，建议在作物间距为15 cm且04 sadve的情况下，最好采用绑垄或平地保水的方法，以优化厄立特里亚Hamelmalo地区的生产率。

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