搜索结果: 1-5 共查到“作物学 Weed management”相关记录5条 . 查询时间(0.203 秒)
《Weed management in direct-seeded rice systems》（图）
Weed management in direct-seeded rice systems Bhagirath Singh Chauhan
2013/11/20
Direct -seeded rice systems have several advantages. Weeds, however, are considered one of the major biological constraints in these systems because there is no seedling size advantage as rice and wee...
Influence of genotypes, planting methods and weed management on competitiveness of wheat（Tritcum aestivum L.）and Phalaris minor Retz
Bread wheat Durum Wheat Phalaris minor Bed planting Weed management
2009/3/3
Field experiments were conducted at the research farm of Punjab Agricultural University, Ludhiana during 2003-04 and 2004-05. The soil of the experimental site was loamy sand in texture and neutral ...
Performance of transplanted scented rice（Oryza sativa L.）under different spacing and weed management regimes in southern Kerala
Productivity profitability nutrient uptake economics basmati plant population density
2009/2/20
A field experiment to study the effects of spacing and weed management practices on transplanted scented rice (‘Pusa Basmati 1’) in the sandy clay loam soil of Vellayani during the winter season o...
Weed management in jute（Corchorus olitorius L.）by post emergence herbicides
Weed management jute（Corchorus olitorius L.） post emergence herbicides
2009/2/20
A field experiment was conducted in the medium fertile neutral soil (pH 7.1) of Barrackpore, West Bengal to screen post- emergence herbicides for weed management in jute (cv. JRO 524). Highest weed ...
Effect of Establishment Methods and Weed Management Practices on Some Growth Attributes of Rice
rice transplantation direct-seeding herbicides weed population leaf area index net assimilatio
2009/1/7
Studies were carried out for two years to evaluate the effect of methods of sowing and weed control practices on the productivity of transplanted and direct wet-seeded rice in Dera Ismail Khan, NWFP, ...