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油用向日葵晚播,密植栽培技术研究的目的是探讨油用向日葵的最佳播期和最适宜密度,也以其合理的群体结构,达到合理利用自然资源。黑龙江省是我国向日葵生产省之一。播种面积在300万亩左右,约占全国向日葵总面积的四分之一。土壤类型有黑钙、沙壤、草甸、白浆土,大于10℃的积温在2200℃以上,年降水量在300—600mm,属松辽平原半干旱、半湿润气候区。本省历来以种植食用向日葵为
Oil with sunflower evening sowing, close planting cultivation technology research is to explore the best sowing date of oilseed and the most appropriate density, but also with its reasonable population structure, to achieve the rational use of natural resources. Heilongjiang Province is one of China’s sunflower production provinces. Sowing area of about 300 mu, accounting for about a quarter of the total area of sunflower. Soil types of black calcium, sandy soil, meadow, white soil, more than 10 ℃ accumulated temperature above 2200 ℃, the annual precipitation in the 300-600mm, Songliao Plain is a semi-arid and semi-humid climate zone. The province has always been to grow edible sunflower