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通过田间试验,研究了双季稻田晚稻机械收获留高茬后紫云英迟播的应用效果。结果表明,与传统紫云英播种技术相比,晚稻机械收获留高茬紫云英迟播显著缩短了紫云英的生育期,但其盛花期能保持与传统播种技术一致,对下茬早稻作物的种植没有影响;两种播种方法对盛花期鲜草产量、植株养分含量和养分积累量均没有显著影响,说明迟播播种能达到与传统播种一样的肥田目的;迟播对紫云英的种子产量及产量构成因素均没有明显影响,与传统播种技术相比可节约劳动力成本约45元/hm2,且可避免传统播种方法对晚稻植株的伤害。在现代双季稻种植条件下,晚稻机械收获留高茬紫云英迟播技术具有较大的优势和发展前景。
The field experiment was conducted to study the application effects of late sowing of the late rice varieties of double cropping rice in late rice harvesting after high stubble harvesting. The results showed that compared with the traditional sowing technology, late rice mechanical harvesting high stubble late shrub significantly shorten the growth period of the Chinese milk vetch, but its flowering period can be consistent with the traditional sowing technology, the next crop of early rice No effect on the planting of crops; the two sowing methods had no significant effect on fresh grass yield, plant nutrient content and nutrient accumulation in full flowering stage, indicating that delayed sowing could achieve the same purpose as conventional sowing; No significant effect on seed yield and yield components, saving labor cost of about 45 yuan / hm2 compared with traditional sowing technology, and avoiding damage of late sowing plants by traditional sowing methods. Under the condition of modern double cropping rice planting, late rice harvesting has the advantage and development prospect of late sowing technology.