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1 向日葵覆膜栽培的试验、示范情况 据调查,早在1982年,杭锦后旗农业技术推广站、巴彦淖尔市农业科学研究所等单位开始了向日葵的地膜栽培试验。其中杭锦后旗农业技术推广站的试验表明,油用向日葵覆膜比不覆膜出苗期提前5d,现蕾期提前9d,开花和成熟分别提前12d。覆膜的产量294.85kg/667m~2,比对照增产142.8kg/667m~2.增幅为94.4％。1983年,巴彦淖尔市农业科学研究所试验表明,覆膜平均产量366.1kg/667m~2,比对照增产44％。2000年五原美
1 sunflower film cultivation test, demonstration According to the survey, as early as 1982, Hangjinhouqi Agricultural Technology Extension Station, Bayannur City Institute of Agricultural Sciences and other units began the cultivation of sunflower plastic film. Hangjinhouqi which agricultural technology promotion station test showed that oil sunflower coating than the non-coating seedling early 5d, budding early 9d, flowering and maturity respectively 12d. The yield of mulching film was 294.85kg / 667m ~ 2, increased by 142.8kg / 667m ~ 2 than the control, with an increase of 94.4%. In 1983, Bayannur City Institute of Agricultural Sciences test showed that the average yield of coated film 366.1kg / 667m ~ 2, 44% more yield than the control. Five years of the United States in 2000