氮磷肥配施对一年生黑麦草生长性能及产量的影响
Effects of Combined Application of N and P Fertilizer on Growth Performance and Yield of Annual Ryegrass
王松 1朱欣 1李龙兴 1杨丰 1吴小敏 1翁吉梅 2申李 2张明均2
作者信息
- 1. 贵州省草地技术试验推广站,贵州 贵阳 550025
- 2. 贵州省畜禽遗传资源管理站,贵州 贵阳 550001
- 折叠
摘要
该试验研究了氮磷肥配合施用对一年生黑麦草生长性能和产量的影响.结果表明,在不施氮(N0)的基础上施用磷肥,增产效果不明显;在低氮(N150)条件下,施磷处理较不施磷处理可显著增产;在高氮(N300)条件下,N300P90试验组产量显著高于N300P0.在不同的施磷水平上配合施用氮肥均可显著提高一年生黑麦草产量.氮、磷配合使用条件下,N300P180处理的配比效果最好,可以不同程度地提高黑麦草的叶片数、分蘖数、株高和表观叶面积等生长指标,但与N300P90组相比,产量差异不显著.以上研究结果表明,氮磷肥配施可以提高黑麦草生长性能和产量,综合产量、生长性能和经济效益,N300P90综合效果最佳.
Abstract
This experiment was conducted to study the effects of combined application of nitrogen and phosphorus fertilizer on the growth performance and yield of annual ryegrass.The results showed that the effect of applying phosphorus fertilizer without N(N0)was not obvious.Under the condition of low nitrogen(N150),phosphorus treatment can significantly increase the yield compared with no phosphorus treatment.Under the condition of high nitrogen(N300),the yield of N300P90 experimental group was significantly higher than that of N300P0.The yield of annual ryegrass can be significantly increased by applying nitrogen fertilizer at different phosphorus application levels.Under the conditions of combined use of nitrogen and phosphorus,the ratio of N300P180 treatment had the best effect,which could improve the growth indexes of ryegrass,such as the number of leaves,tillering number,plant height and apparent leaf area,but the yield was not significantly different from that of N300P90 group.The above results showed that the combined application of N and P fertilizer could improve the growth performance and yield of ryegrass,and the comprehensive yield,growth performance and economic benefit of N300P90 was the best.
关键词
氮肥/磷肥/黑麦草/产量Key words
nitrogen fertilizer/phosphorus fertilizer/ryegrass/output引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据