化肥减量配施有机肥对沙土地紫花苜蓿生产性能及肥料利用率的影响
Effect of Fertilizer Reduction Combined with Organic Fertilizer on Production Performance and Nutrient Utilization of Alfalfa in Sand Land
王建岭 1王震 1张强 1董朋博 2张峰举3
作者信息
- 1. 国家能源集团宁夏煤业有限公司 宁夏,银川 750021
- 2. 宁夏大学农学院 宁夏,银川 750021
- 3. 宁夏大学生态环境学院 宁夏,银川 750021
- 折叠
摘要
针对沙土地紫花苜蓿生产中养分流失严重、肥料利用率低的问题,本研究采用单因素随机区组设计,在宁夏东部毛乌素沙土地设置不施肥(CK)、有机肥代替0%(F1)、15%(F2)、30%(F3)、45%(F4)、60%(F5)、100%(F6)常量化肥共7个处理的田间试验,探讨了不同处理对紫花苜蓿(Medicago sativa L.)产量、品质及养分利用的影响.结果表明:与单施化学化肥(F1)处理相比,30%化肥减量配施有机肥(F3)通过降低紫花苜蓿茎叶比(14.15%),提高干鲜比(4.48%)、粗蛋白含量(10.44%)和干草产量(4.15%),使氮(磷)肥料农学效率提高11.79%,同时提高肥料贡献率(7.38%).结合主成分分析,30%化肥减量配施有机肥是实现沙土地紫花苜蓿品质提升和高效生产的施肥模式.
Abstract
This study addresses the significant nutrient loss and low fertilizer utilization in alfalfa production on sandy land,utilizing a single-factor randomized block design.Field experiments were conducted on the Maowusu sandy land in eastern Ningxia,with seven treatments:no fertilization(CK),organic fertilizer replacing 0%(F1),15%(F2),30%(F3),45%(F4),60%(F5),and 100%(F6)of conventional synthetic fertilizer.The impact of these treatments on the yield,quality,and nutrient utilization of alfalfa(Medicago sativa L.)was examined.Results indicated that,compared to the F1 treatment which only used synthetic fertilizer,reducing the application of synthetic fertilizer by 30%and combining it with organic fertilizer(F3)improved the alfalfa's stem-to-leaf ratio by 14.15%,increased the dry-to-fresh ratio by 4.48%,crude protein content by 10.44%,and hay yield by 4.15%.This resulted in an increase in the agronomic efficiency of nitrogen(phosphorus)fertilizer by 11.79%and simultaneously enhanced the fertilizer contribution rate by 7.38%.Based on principal component analysis,reducing synthetic fertilizer by 30%and combining it with organic fertilizer is identified as the optimal fertilization strategy for improving the quality and efficient production of alfalfa on sandy land.
关键词
紫花苜蓿/沙土地/化肥减量/有机肥无机肥配施/养分利用Key words
alfalfa/sand land/synthetic fertilizer reduction/combined application of organic and synthetic fertilizers/nutrient utilization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