| 韭菜减氮增效试验研究初报 |
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| 引用本文： | 李跃飞,李彬,陶加乐,曹影,徐华.韭菜减氮增效试验研究初报[J].现代农业科技,2022(11). |
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| 作者姓名： | 李跃飞 李彬 陶加乐 曹影 徐华 |
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| 作者单位： | 宿迁市宿豫区农业技术推广中心 江苏宿迁223800,宿迁市宿豫区农业技术推广中心 江苏宿迁223800,宿迁市宿豫区农业技术推广中心 江苏宿迁223800,宿迁市宿豫区农业技术推广中心 江苏宿迁223800,宿迁市宿豫区农业技术推广中心 江苏宿迁223800 |
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| 基金项目： | 宿迁市现代农业引导资金补助专项“宿豫区设施栽培障碍土壤改良”(2019)资助。 |
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| 摘 要： | 土壤障碍问题已成为制约设施蔬菜发展的重要因素,其中土壤硝酸盐积聚为主要障碍因子。研究不同作物氮肥合理施肥模式与施用量,对于促进设施农业可持续发展具有重要意义。本实验旨在探寻本地韭菜作物减氮增效潜力,在适量中微肥平衡施肥条件下,设置常规施氮水平(减氮0%)和减氮25%、50%、75%、100%几个施氮水平,观测韭菜生长情况、产量与品质指标,以及土壤基本化学性状的变化。结果表明,随着减氮比例的提高,韭菜株高、茎宽、叶宽均先增加后减少；韭菜体内硝酸盐含量显著降低；可溶性糖和粗纤维则有所增加。其中,以减75%效果最优,最高增产可达366.6%,对应增收率为146.5%。
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| 关 键 词： | 韭菜 减氮增效 生长 产量 |
| 收稿时间： | 2021/10/3 0:00:00 |
| 修稿时间： | 2021/10/3 0:00:00 |
Preliminary study on nitrogen reduction and efficiency increase of leek |
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| Abstract: | Soil obstacle has become an important factor restricting the development of protected vegetables, among which soil nitrate accumulation is the main obstacle factor. It is of great significance to study the rational fertilization mode and application amount of nitrogen fertilizer for different crops to promote the sustainable development of facility agriculture. The purpose of this experiment was to explore the potential of reducing nitrogen and increasing efficiency of local leek crops. Under the balanced fertilization condition of moderate and micro fertilizers, the conventional nitrogen application level (reducing nitrogen by 0%) and reducing nitrogen by 25%, 50%, 75% and 100% were set to observe the growth, yield and quality indexes of leek and the changes of basic chemical properties of soil. The results showed that with the increase of nitrogen reduction ratio, the plant height, stem width and leaf width of leek increased first and then decreased. Nitrate content in leek decreased significantly. Soluble sugar and crude fiber increased. Among them, the effect of reducing 75% is the best, the highest yield increase can reach 366.6%, and the corresponding income increase rate is 146.49%. |
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| Keywords: | Leek Reduce nitrogen and increase efficiency Grow Yield |
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