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在黄淮海地区,通过对不同播期红麻生长发育规律的研究,结果表明迟播比早播的生育期短,麻株旺长时间晚而短,其骨占比例小、叶占比例大、不利纤维成熟。迟播天数与麻株干物质积累、纤维积累、株高、茎粗、皮厚、出麻率、纤维细胞数以及纤维产量呈显著或极显著负相关。播种季节愈晚,减产幅度愈大。生产上设法早播、早管、适时晚收、选用中熟品种和适当增加密度,能有效地提高夏麻产量。
In the Huang-Huai-Hai region, through the study on the growth and development of kenaf at different sowing dates, the results showed that the growth rate of kenaf was shorter than that of early sowing, Detrimental fiber maturity. The number of late sowing days had significant or extremely significant negative correlation with hemp plant dry matter accumulation, fiber accumulation, plant height, stem diameter, skin thickness, hemp yield, fiber cell number and fiber yield. The later sowing season, the greater the reduction rate. Early production of early detection, early management, late harvest late, use medium maturing varieties and appropriate increase in density, can effectively improve the yield of summer flax.