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首页> 外文期刊>Soil & Environment >Growth and yield response of maize ( Zea mays L.) to foliar NPK-fertilizers under moisture stress condition
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Growth and yield response of maize ( Zea mays L.) to foliar NPK-fertilizers under moisture stress condition

机译：水分胁迫下玉米对玉米氮磷钾肥的生长和产量响应

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Improper water and nutrients management are the two main factors that adversely affect the growth and crop productivity under moisture stress (drought) condition in Khyber Pakhtunkhwa province of Pakistan. Foliar nutrient management could not only apply nutrients to the hungry crops but it could also be beneficial in terms of providing water to the thirsty crops under moisture stress condition. This field experiment was designed to investigate effects of foliar NPK (2% each) applied alone and in various combinations (N, P, K, N + P, N + K, P + K and N + P + K) and their application time (one split at 30 and 60 days after emergence (DAE), and two equa l splits at 30 + 60 DAE) on the growth and yield of maize (Zea mays L., cv. Azam) under moisture stress condition at the Research Farm of The University of Agriculture Peshawar, Pakistan during summer 2011. The experiment was laid out in randomized complete block design using three replications. The results revealed that the rest (all folia r treated plots) plots significantly took more time to physiological maturity (88.2 days), produced taller plants (221 cm), higher mean single leaf area (413 cm 2 ), biological yield (10285 kg ha -1 ), heavier grains (229 g/1000 grains), grains ear -1 (376), grain yield (2896 kg ha -1 ) and harvest index (28.2%) than the control plots (foliar nutrients not applied). Sole application of N, P, and K in one split (2% each) at the early growth stage (30 DAE) decreased grain yield in maize, while combined application of N+P and N+P+K in one split at 30 DAE or 60 DAE or in two equal splits (1% each at 30 and 60 DAE) increased grain yield in maize. It was co ncl uded from the result s t hat comb ined fo liar a pplication of the three major nutrients (N+P+K) at the rate of 1% each in two equal splits at 30 and 60 DAE increased maize productivity under moisture stress condition in the study area.
机译：在巴基斯坦开伯尔-普赫图赫瓦省，水分和营养管理不当是在水分胁迫（干旱）条件下对生长和作物生产力产生不利影响的两个主要因素。叶面养分管理不仅可以将营养物施加到饥饿的农作物上，而且在水分胁迫条件下为口渴的农作物提供水方面也可能是有益的。这项野外实验旨在研究单独施用和各种组合施用（N，P，K，N + P，N + K，P + K和N + P + K）的叶面氮磷钾（各2％）的效果及其应用研究中水分胁迫条件下玉米（Zea mays L.，cv。Azam）生长和产量的时间（出芽后30天和60天一次分裂，DAE 30 + 60时两次相等分裂）巴基斯坦白沙瓦农业大学的农场，于2011年夏季进行。该实验采用三组重复的随机完整模块设计进行了布局。结果表明，其余（所有经叶面处理的地块）地块的生理成熟时间（88.2天）显着增加，植株更高（221 cm），平均单叶面积（413 cm 2）更高，生物产量（10285 kg） ha -1），较重的谷粒（229 g / 1000谷粒），穗粒-1（376），谷物产量（2896 kg ha -1）和收获指数（28.2％）高于对照样地（未施用叶面养分）。在生长早期（30 DAE），一等份单独施用N，P和K（各占2％）会降低玉米的籽粒产量，而N + P和N + P + K在30的一等份中联合施用DAE或60 DAE或分成两个等份（30和60 DAE分别为1％）提高了玉米的籽粒产量。结果表明，在30和60 DAE下，三种主要营养素（N + P + K）的均分比例分别为1％，分两次均分，提高了玉米的生产力研究区域的状况。

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