摘要
在田间条件下,采用埋入和覆盖尼龙袋子的方法,研究了大豆绿肥的腐解特征。结果表明,绿肥埋入和覆盖后随着时间的延长而逐渐分解,不同时间绿肥干物质量存在着显著差异。其腐解速率随着时间的延续而逐渐降低。大豆绿肥在种植玉米比不种植玉米的条件下腐解得快,在玉米施肥比玉米不施肥的条件下腐解得快,埋深10 cm比覆盖在地表腐解得快,但差异不显著。大豆绿肥使用量对其腐解速率几乎没有影响。大豆绿肥经过52 d的分解,在玉米施肥、不施肥和不种植玉米的条件下,其腐解率分别为59.63%、53.94%和43.61%。在整个腐解过程中,最初4 d腐解最快,8～16 d腐解速率中等,24 d至试验结束腐解最慢。3个阶段的腐解速率存在着显著差异。
In this paper the experiment was adopted by embedding and covering method of nylon bag in the field.The research was studied the green manure after embedding and covering the decomposition of the rule.The results showed that the green manure resolved gradually after embedded with the extension of time.In different periods of green manure dry matter quality existed significant difference.The decomposition rate was reduced with time going on.The decomposition rate of the greenmanure under the maize planting was higher than no maize.In corn fertilizing conditions,the speed of the green manure＇s decay was faster than no fertilizer.Green manure was decomposed faster buried in the ground 10 cm than covered by on the ground.But the difference was not significant.There was no effect on the soybean decomposition rate by application amount.After 52 d decomposition,soybean＇s decomposition rate were 59.63%,53.94% and 43.61% under the conditions of the corn applies fertilizer,the corn didn＇t apply fertilizer and no planting corn.In the whole process of decay,the initial 4 d of the speed of the green manure＇s decay were quickest,and 8～16 d were medium compared with the slowest after test of 24 d.Three stage＇s decomposition speeds had the remarkable difference.
出处
《中国土壤与肥料》
CAS
CSCD
北大核心
2011年第5期76-78,87,共4页
Soil and Fertilizer Sciences in China
基金
农业部公益性行业(农业)科研专项"绿肥作物生产与利用技术集成研究与示范"(201103005-07)
关键词
绿肥
腐解
特征
green manure
decomposition
characteristic
