| 刘泽宇,刘罡,张玉霞,王显国,王振国,崔凤娟,张庆昕,刘庭玉.氮肥用量和混播比例对麦豆混播草地饲草产量及种间关系的影响[J].干旱地区农业研究,2024,(5):109~117 |
| 氮肥用量和混播比例对麦豆混播草地饲草产量及种间关系的影响 |
| Effects of nitrogen fertilizer application and mixing ratio on grass forage yield of oat\|pea forage crops and interspecific relationship |
| |
| DOI：10.7606/j.issn.1000-7601.2024.05.11 |
| 中文关键词: 麦豆混播草地 氮肥 混播比例 产量 种间关系 |
| 英文关键词:oat\|pea mixed grassland nitrogen fertilizer mix ratio yield interspecific relationships |
| 基金项目:国家牧草产业技术体系（CARS-34）；内蒙古自治区直属高校科研专项（GXKY22018）；国家民委科尔沁沙地生态农业重点实验室开放基金项目（MDK2023095）;中央支持地方高校改革发展——作物学（草学）提质学科建设项目（240101） |
|
| 摘要点击次数: 15 |
| 全文下载次数: 17 |
| 中文摘要: |
| 为研究适宜科尔沁沙地生境下的麦豆混播草地氮肥用量和混播比例，设置0（N0）、70（N70）、140（N140）、210（N210） kg·hm-2共4个氮肥施用水平，100∶0（W0）、80∶20（W20）、70∶30（W30）、60∶40（W40）、50∶50（W50）、0∶100（W100）共6个燕麦与饲用豌豆混播比例处理，进行田间双因素随机区组试验，分析氮肥用量和混播比例及其交互作用对麦豆混播草地产量和种间关系的影响。结果表明：随氮肥用量的增加，燕麦、饲用豌豆和麦豆总产量均呈逐渐增加的趋势，N210处理较其他施氮处理麦豆鲜草总产量提高24.33%~48.24%，干草总产量提高56.91%~111.16%；随饲用豌豆混播比例的增加，燕麦鲜草产量呈降低趋势，饲用豌豆的鲜草和干草产量呈增加趋势，麦豆总产量则呈先增加后降低的趋势， W40处理麦豆饲草产量最高，鲜草和干草产量分别为29.79 t·hm-2和9.06 t·hm-2；N210W40处理下，麦豆混播草地产量最高，鲜草和干草产量分别为34.4 t·hm-2和10.53 t·hm-2，较其他处理分别提高1.42%~89.32%和0.38%~255.74%。不同混播比例下土地当量比>1，其中W40处理土地当量比最高（1.19）；麦豆混播草地中燕麦的相对产量高于饲用豌豆，燕麦的侵略强度高于0。综上，建议在科尔沁沙地采用60∶40麦豆混播比例配合210 kg·hm-2氮肥用量进行麦豆混播草地生产。 |
| 英文摘要: |
| To determine the optimal nitrogen fertilizer dosage and mixing ratio for oat\|pea mixed grassland in the suitable habitat of Horqin sandy land, a field trial was conducted using a two\|factor randomized block design. Four nitrogen fertilizer (pure N) application levels were tested: 0 (N0), 70 (N70), 140 (N140), and 210 (N210) kg·hm2, along with six oat\|to\|forage pea mixing ratios: 100∶0 (W0), 80∶20 (W20), 70∶30 (W30), 60∶40 (W40), 50∶50 (W50), and 0∶100 (W100). The effects of nitrogen fertilizer rates, mixing ratios, and their interactions on yield and interspecific relationship in the oat\|pea mixed grassland were analyzed. The results showed that: with the increase of nitrogen fertilizer, the total yield of oats, forage peas and wheat beans gradually increased. The hay and fresh grass yield of N210 treatment was significantly higher than that of N0 and other nitrogen fertilizer treatments (P<0.05), and the total yield of wheat beans was increased by 24.33%~48.24% for fresh grass, and 56.91%~111.16% for hay yield, in the N210 treatment compared with the other treatments. With the increase of forage pea mixing ratio, the fresh grass yield of oats showed a decreasing trend, the fresh grass and hay yields of forage peas showed an increasing trend, and the total yield of oat\|pea showed a trend of increasing and then decreasing, of which the W40 mixing ratio treatment had the highest yield of oat\|pea forage crop, which was 29.79 t·hm-2 and 9.06 t·hm-2. The interaction of nitrogen fertilizer and mix ratio showed that the fresh and hay yields of oat\|pea mixed grassland were highest under the N210W40 treatment, with yields of 34.4 t·hm-2 （fresh grass） and 10.53 t·hm-2 (hay grass), respectively. These values were 1.42% to 89.32% and 0.38% to 255.74% higher than those of other treatments. The land equivalent ratio under different mix ratios was >1, with the highest land equivalent ratio of 1.19 under the W40 treatment. Relative yields of oats > relative yields of forage peas in the mixed\|grassland, oats’ aggression intensity >0. Therefore, it is recommended to use 60∶40 oat\|pea mix ratio and 210 kg·hm-2 N fertilizer dosage for oat\|pea mix grassland production in Horqin sandy land. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| | |