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首页> 美国卫生研究院文献>Scientific Reports >Potassium Management for Improving Growth and Grain Yield of Maize (Zea mays L.) under Moisture Stress Condition
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Potassium Management for Improving Growth and Grain Yield of Maize (Zea mays L.) under Moisture Stress Condition

机译：水分胁迫下钾肥管理提高玉米生长和籽粒产量

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摘要

Potassium (K) fertilizer management is beneficial for improving growth, yield and yield components of field crops under moisture stress condition in semiarid climates. Field experiments were conducted to study the response of maize (Zea mays L., cv. Azam) to foliar and soil applied K during summer 2013 and 2014. The experiments were carried out at the Agronomy Research Farm of The University of Agriculture Peshawar, Northwest Pakistan under limited irrigation (moisture stress) condition. It was concluded from the results that application of foliar K at the rate of 1–3% and foliar Zn at the rate of 0.1–0.2% was more beneficial in terms of better growth, higher yield and yield components of maize under moisture stress condition. Early spray (vegetative stage) resulted in better growth and higher yield than late spray (reproductive stage). Soil K treated plots (rest) plots performed better than control (K not applied) in terms of improved growth, higher yield and yield components of maize crop. The results further demonstrated that increasing the rate of soil applied K up to 90 kg P ha−1 in two equal splits (50% each at sowing and knee height) improve growth and maize productivity under semiarid climates.
机译：在半干旱气候下，在水分胁迫条件下，钾肥管理有利于改善田间作物的生长，产量和产量构成。进行了田间试验，研究了玉米（Zea mays L.，cv。Azam）在2013年夏季和2014年夏季对叶面和土壤施钾的响应。该试验在西北白沙瓦农业大学农学研究农场进行巴基斯坦在有限灌溉（潮湿压力）条件下。从结果可以得出结论，在水分胁迫条件下，叶面喷施钾肥1-3％，叶面喷施锌含量0.1-0.2％，对玉米更好的生长，更高的产量和产量构成更有利。 。与后期喷雾（生殖阶段）相比，早期喷雾（营养阶段）导致更好的生长和更高的产量。在改良的玉米生长，更高的产量和产量构成方面，土壤钾处理的地块（其余）的表现优于对照（未施用钾）。结果进一步表明，在半干旱气候下，以相等的两个比例（在播种和膝盖高度各占50％）将土壤钾肥的施用量提高至90 kg P ha -1 可以改善生长和玉米生产力。

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