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[学位论文] 作者：Khalid Usman,,
来源：中国科学技术大学 年份：2016
在已有的研究中,诸多学者明确指出发达国家和发展中国家在经济发展上的显著差异来源于巨大的国家创新能力和创新吸收能力差距。因此,从国家创新系统角度研究国家创新能力和创...
Effect of Phosphorus and Irrigation Levels on Yield, Water Productivity, Phosphorus Use Efficiency a
[期刊论文] 作者：Khalid USMAN,
来源：水稻科学：英文版 年份：2013
With decreasing availability of water for agriculture and increasing demand for rice production, an optimum use of irrigation water and phosphorus may guarantee...
Effect of Phosphorus and Irrigation Levels on Yield, Water Productivity, Phosphorus Use Efficiency a
[期刊论文] 作者：Khalid USMAN,
来源：水稻科学（英文版） 年份：2004
...
Impact of Tillage and Herbicides on Weed Density, Yield and Quality of Cotton in Wheat Based Croppin
[期刊论文] 作者：Khalid Usman,Niamatullah Khan,,
来源：农业科学学报（英文版） 年份：2004
Conservation tillage may improve yield of cotton in addition to improvement in soil quality if practiced for longer period. However, the practice may not be pro...
[期刊论文] 作者：Khalid Usman,Ejaz Ahmad Khan,Nia,
来源：Journal of Integrative Agricultu 年份：2020
...
Impact of Tillage and Herbicides on Weed Density, Yield and Quality of Cotton in Wheat Based Croppin
[期刊论文] 作者：Khalid Usman,Niamatullah Khan,Muhammad Umar Khan,Aziz ur Rehman,Said Ghulam,,
来源：Journal of Integrative Agriculture 年份：2013
Conservation tillage may improve yield of cotton in addition to improvement in soil quality if practiced for longer period. However, the practice may not be pro...
[期刊论文] 作者：Khalid Usman,Ejaz Ahmad Khan,Niamatullah Khan,Abdur Rashid,Fazal Yazdan,Saleem Ud Din,,
来源：Journal of Integrative Agriculture 年份：2014
Zero tillage with residues retention and optimizing nitrogen fertilization are important strategies to improve soil quality and wheat(Triticum aestivum L.) yiel...
Short Response of Spring Wheat to Tillage, Residue Management and Split Nitrogen Application in a Ri
[期刊论文] 作者：Khalid Usman,Ejaz Ahmad Khan,Fazal Yazdan,Niamatullah Khan,Abdur Rashid,Saleem Ud Din,,
来源：Journal of Integrative Agriculture 年份：2014
A field experiment was conducted to study the impact of tillage, crop residue management and nitrogen(N) splitting on spring wheat(Triticum aestivum L.) yield o...
Integrated Weed Management Through Tillage and Herbicides for Wheat Production in Rice-Wheat Croppin
[期刊论文] 作者：Khalid Usman,Inayat Ullah,Said Mir Khan,Muhammad Umar Khan,Said Ghulam,Muhammad Anwar Khan,,
来源：Journal of Integrative Agriculture 年份：2012
Conservational tillage (CT) in combination with broad spectrum herbicide may be more efficient and economical in controlling weeds, reducing cost of cultivation...
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