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向日葵是C_3植物中生长发育快,单位时间内干物质积累多的作物。为了探明向日葵植株所积累的干物质最终在自身的生物、籽实产量与向日葵品种、类型、密度、施肥的关系,1980～1982年在辽宁省农业科学院进行了田间试验。一、材料与方法土壤肥力为中上等的草甸土。三年中,先后安排了品种对比、密度和施肥试验。1.品种试验:采用晚熟品种6个、中晚熟品种6个,食用品种7个、油用品种8个。2.密度试验:食用型以阜新大喀为试材,每亩1100、1500、1900、2300、2700、3100、3500株7个处理;油用型以辽葵1号为试材,每亩2000、2400、2800、3200、3600、4000、4400株
Sunflower C_3 plant growth and rapid development, the accumulation of more dry matter per unit of time the crop. In order to find out the relationship between dry matter accumulation of sunflower plants and their own biological and seed yield and sunflower varieties, types, densities and fertilization, field experiments were conducted in Liaoning Academy of Agricultural Sciences from 1980 to 1982. First, materials and methods Soil fertility is medium meadow soil. Three years, has arranged a variety of contrast, density and fertilizer tests. 1. Variety testing: 6 late-maturing varieties, 6 late maturing varieties, 7 food varieties and 8 oil varieties. 2. Density test: The edible type was Fuxin Dacca, with seven treatments of 1100, 1500, 1900, 2300, 2700, 3100 and 3500 plants per acre; , 2400, 2800, 3200, 3600, 4000, 4400 strains