【摘要】 为明确不同温度、播深、播种量对水稻旱直播出苗能力、产量及其构成因素的影响,以长白25、吉粳88为材料,分析温度、播深、播种量对旱直播水稻产量的影响。结果表明,出苗能力随着播深的增加而降低、随着温度的提升而提高。当播种量为60 kg/hm~2时旱直播水稻产量最高,随着播量的继续增加,产量逐渐降低。更多还原

【Abstract】 In order to determine the effect of different temperature, sowing depth and seeding rate on the emerging ability, yield and yield composition of rice direct sowing. In order to analyze the effect of temperature, sowing depthand seeding rate on the yield of the dry direct seeding on"changbai25"and"jijing88". The results showed that theemerging ability decreases with the increase of sowing depth and increases with the increase of temperature. Whenthe sowing rate was 60 kg/ha, the yield of the rice was the highest, as the amount of seeding rate continues to increase, the yield decreases.更多还原