XU Ying-ying,LIU Yu-tao,WANG Yu-xian,et al.Study on Nitrogen Fertilizer Amount and Seeding Density in Dry Direct Seeding of Rice in Western Heilongjiang Province[J].HEILONGJIANG AGRICULTURAL SCIENCES,2020,(11):28-30.[doi:10.11942/j.issn1002-2767.2020.11.0028]
黑龙江省西部地区水稻旱直播氮肥施用量与播种密度研究
- Title:
- Study on Nitrogen Fertilizer Amount and Seeding Density in Dry Direct Seeding of Rice in Western Heilongjiang Province
- Keywords:
- Western Heilongjiang Province; rice; dry direct seeding; nitrogen fertilizer; seeding density
- 文献标志码:
- A
- 摘要:
- 水稻旱直播因节水省工等优点在黑龙江省逐步发展起来，播种密度和施氮肥量是影响直播的关键因素。本研究以龙庆稻5号为试验材料，采用机械旱穴直播，裂区试验，设置3种播种密度和施氮肥量，对不同处理下的分蘖数和产量等性状进行了比较。结果表明：播种密度为每穴22粒，施氮肥量为290 kg?hm-2时，有效分蘖数和产量最高，是旱直播栽培的适宜密肥配比。
- Abstract:
- Dry direct seeding of rice has gradually developed in Heilongjiang Province,due to its advantages of saving water and labor.Seeding density and nitrogen fertilizer amount are the key factors affecting rice direct seeding.In this study,Longqing rice No.5 was used as experimental material.Three kinds of seeding density and nitrogen amount were set up.By mechanical direct seeding method and split plot experiment,the tiller numbers and yield under different treatments were compared.The results showed that the effective tiller numbers and yield were the highest when the seeding density was 22 grains per hole and the amount of nitrogen fertilizer was 290 kg?hm-2,which was suitable combination for dry direct seeding.
参考文献/References:
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备注/Memo
收稿日期：2020-07-16