播种量对滨海稻区水稻机械旱直播产量、米质及经济效益的影响

Effect of Sowing Rate on Yield,Quality and Economic Benefit of Mechanical Dry Direct Seeding of Rice in Coastal Rice Area

为了完善滨海稻区水稻机械旱直播稻高产栽培技术体系,保证产量米质同时尽量降低农业成本、降低劳动强度,提高农业生产效率、经济效益,为直播稻未来在滨海稻区发展提供理论依据。采用田间对比试验方法,研究了不同播种量对滨海稻区水稻机械旱直播产量、米质及经济效益的影响,探索滨海稻区水稻机械旱直播最佳播种量。结果表明,播种量为97.5 kg/hm^(2)机械旱直播产量最高,加工品质较好,但稻米营养品质及食味值略低于播种量为120 kg/hm^(2);水稻机械旱直播比机插秧分别减产2.13 t/hm^(2)、1.76 t/hm^(2)、2.05 t/hm^(2),但效益比机插秧分别增加了0.144万元/hm^(2)、0.218万元/hm^(2)、0.118万元/hm^(2),处理2比处理1、3分别增加0.074万元/hm^(2)、0.100万元/hm^(2)。

In order to improve the high-yield cultivation technology system of mechanical dry direct seeding rice in coastal rice areas,ensure the yield and quality of rice,minimize agricultural costs,reduce labor intensity,improve agricultural roduction efficiency and ecological benefits,and provide theoretical basis for the future development of direct seeding rice in coastal rice areas.The effects of different sowing rates on yield,quality and economic benefits of mechanical dry direct seeding in coastal rice area were studied by field comparative experiment,and the best sowing rate of mechanical dry direct seeding in coastal rice area was explored.The results showed that 97.5 kg/hm^(2) sowing rate had the highest yield and better processing quality,but the nutritional quality and taste value of rice were slightly lower than 120 kg/hm^(2) sowing rate;Compared with mechanical transplanting,the yield of mechanical direct seeding was 2.13 t/hm^(2),1.76 t/hm^(2) and 2.05 t/hm^(2) respectively,but the benefit increased by 1440 yuan/hm^(2),2180 yuan/hm^(2) and 1180 yuan/hm^(2) respectively,and the treatment 2 increased by 740 yuan/hm^(2) and 1000 yuan/hm^(2) respectively compared with the treatment 1 and 3.