摘要
为了提高南亚热带盈江地区冬闲田利用率，本试验重点探讨磷、钾和石灰不同施量组合以及两种耕作措施对云南本土优良冬季牧草云光早光叶紫花苕产量影响的试验研究。结果表明，施用磷肥对供试牧草有明显的线性增产效果（P〈0．05），特别是在施定量钾和石灰基础上，增施磷肥可以提高光叶紫花苕的干物质产量达9．35％。22．85％；种植光叶紫花苕时，全耕措施获得干物质产量和叶量百分率比免耕的分别提高28．22％（P〈0．01）和高14．2个百分点（P〈0．01）。在盈江及其类似区域的冬闲田种植光叶紫花苕时，必须采用全耕措施和施用钙镁磷肥600kg／hm^2和硫酸钾200kg／hm^2，以保证光叶紫花苕高产和维持土壤肥力，进而稳定下一季稻的产量。
For increasing utilization of the free rice-field in winter, the experiment of applying phosphorus （P）, potassium （K） and lime and to compare with two cultivation means were carried out to increase the yields of Vicia villosa grown in Yingjiang county, south subtropical of Yunnan province. The results showed that dry matter yield （DMY） of Vicia villosa grown per hectare significantly increased with P fertilizer application, especially, based on the ration of K and lime application, DMY of Vicia villosa was increased at 9.35% - 22.85 % with adding P fertilizer to compare with treatment of without P fertilizer. Under planting Vicia villosa, complete tilth method was better at DMY and percentage of leaf yield which were in turn 8 130.9 kg/ha and 78.4%, higher than those of free-tilth. From this experiment, full-tilth method and applying 72 kg P2O5/ha and 100 kg K2O/ha must be done to ensure high yields of Vicia villosa, keep soil fertility and stabilize yields of rice the next season in Yingjiang county or other similar areas.
出处
《牧草与饲料》
2009年第2期34-37,52,共5页
Journal of Forage & Feed
基金
科技部农业成果转化资金项目（2006GB2F300272）和云南省省院省校合作项目（2003ZCBFB00A003）,云南省草地动物科学研究院院长基金项目（编号：2007YNBP05）.
关键词
冬闲田
光叶紫花苕
磷肥
钾肥
Free rice-field in winter
Vicia villosa
Phosphorus fertilizer
Potassium fertilizer
