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| K和P对巴基斯坦西北地区向日葵籽粒质量及经济盈利的交互效应 | |
| 引用本文： | AMANULLAH,M. W. KHAN. K和P对巴基斯坦西北地区向日葵籽粒质量及经济盈利的交互效应[J]. 土壤圈, 2011, 21(4): 532-538 |
| 作者姓名： | AMANULLAH M. W. KHAN |
| 作者单位： | Department of Agronomy;Khyber Pakhtunkhwa Agricultural University; |
| 基金项目： | *1Supported by the National Social Science Foundation of China (Nos. 10ZD & M030) and the Non-Profit Industry Financial Program of the Ministry of Land and Resources of China (No. 200811033), the Foundation of Philosophy and Social Sciences Research of Jiangsu Higher Education Institutions, China (No. 2010ZDAXM008), and the Project Funded by the Priority Academic Program Development of Jiangsu Higher Education Institutions, China. |
| 摘 要： | A field experiment was conducted using a split plot randomized complete block design with three replications to study the effects of potassium (K) and phosphorus (P) application on sunflower (Helianthus annuus L.) growth at the New Developmental Research Farm of Khyber Pakhtunkhwa Agricultural University in Peshawar,Pakistan.Six levels of K (0,25,50,75,100 and 125 kg K ha-1) were main plots while four levels of P (0,45,90 and 135 kg P ha-1) were subplots.Increase in both K and P levels enhanced grain oil concentration of sunflower.Increase in P level increased grain protein concentration,while increase in K level decreased grain protein concentration.Both oil and protein yields increased significantly with increase in K and P levels.The increase in oil and protein yields of sunflower was mainly attributed to the improvement in yield components (grains per head,grain weight and head size) and the significant increase in grain yield.The highest net returns of 297 and 368 US$ ha-1 based on grain and oil yields,respectively,were obtained from a combination of 100 kg K ha-1 + 45 kg P ha-1. |
| 关 键 词： | economic analysis grain yield oil content protein content |
Interactive effect of potassium and phosphorus on grain quality and profitability of sunflower in Northwest Pakistan |
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| AMANULLAH and M. W. KHAN. Interactive effect of potassium and phosphorus on grain quality and profitability of sunflower in Northwest Pakistan[J]. Pedosphere, 2011, 21(4): 532-538 | |
| Authors: | AMANULLAH and M. W. KHAN |
| Affiliation: | Department of Agronomy, Khyber Pakhtunkhwa Agricultural University, Peshawar (Pakistan);Department of Agronomy, Khyber Pakhtunkhwa Agricultural University, Peshawar (Pakistan) |
| Abstract: | A field experiment was conducted using a split plot randomized complete block design with three replications to study the effects of potassium (K) and phosphorus (P) application on sunflower (Helianthus annuus L.) growth at the New Developmental Research Farm of Khyber Pakhtunkhwa Agricultural University in Peshawar, Pakistan. Six levels of K (0, 25, 50, 75, 100 and 125 kg K ha-1) were main plots while four levels of P (0, 45, 90 and 135 kg P ha-1) were subplots. Increase in both K and P levels enhanced grain oil concentration of sunflower. Increase in P level increased grain protein concentration, while increase in K level decreased grain protein concentration. Both oil and protein yields increased significantly with increase in K and P levels. The increase in oil and protein yields of sunflower was mainly attributed to the improvement in yield components (grains per head, grain weight and head size) and the significant increase in grain yield. The highest net returns of 297 and 368 US$ ha-1 based on grain and oil yields, respectively, were obtained from a combination of 100 kg K ha-1 + 45 kg P ha-1. |
| Keywords: | economic analysis grain yield oil content protein content |
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