摘要
宁南旱作农区是我国经济比较落后,生态环境十分脆弱的地区。西部大开发以来,该区苜蓿人工草地建设取得显著成绩,如何在干旱条件下提高苜蓿产草量,成为农业生态经济研究的战略课题。通过对苜蓿施肥梯度、施肥模式的试验研究,在宁南地区当年生苜蓿地以过磷酸钙500 kg/hm2,尿素43 48 kg/hm2 作为底肥施入效果最佳;多年生苜蓿则以过磷酸钙300 kg/hm2、尿素60 kg/hm2 施入效果最佳。
The southern part of Ningxia is one of the undeveloped areas in China. The environment is very fragile. Since the comprehensive development in western China, the establishment of alfalfa sown pastures has developed quickly. How to increase the alfalfa production in arid conditions becomes a strategic task of the agro-ecological economy. Based on the study on different fertilizing method, applying Ca(H_2PO_3)_2·H_2O·CaSO_4 500 kg/hm^2 and CO(NH_2)_2 43.48kg/hm^2 on 1st year alfalfa pasture as the basal fertilizer had the best results. For perennial alfalfa pasture, applying Ca(H_2PO_3)_2·H_2O·CaSO_4 300 kg/hm^2 and CO(NH_2)_2 43.48kg/hm^2 had the best result in southern Ningxia.
出处
《草业科学》
CAS
CSCD
2005年第4期26-29,共4页
Pratacultural Science
基金
农业部农业结构调整重大技术研究专项(2002 09 02A)
关键词
宁南旱区
苜蓿
施肥模式
研究
Dryland farming
southern part of Ningxia
Alfalfa
fertilizing method
Study
