有机肥料不同培养法氮素释放特点及其与作物吸氮关系的研究

THE STUDY OF RELEASE LAW OF NITROGEN IN MANURE AND RELATIONSHIP BETWEEN THE ACCUMULATED AMOUNT OF RELEASE NITROGEN IN MANURE AND THE NITROGEN ABSORBED BY CROP

应用不同培养法研究了有机肥料的氮素释放特点，并与盆栽试验的作物吸氮量进行相关分析。结果表明，好气和厌气培养法在２个月内氮素释放累积趋势比较一致。符合ｙ＝ｘ／（ａ＋ｂｘ模型，与作物吸氮的相关性培养７ｄ即可达显著水平。好气培养—间歇淋洗法氮素释放累积量在一年内符合ｙ＝ａ＋ｂｘ模型，时间再长便符合ｙ＝ｘ／（ａ＋ｂｘ）模型。与作物吸氮量的相关性在一个月后达显著水平，４个月以后达极显著水平。

The different incubated method was adopted to study the law of nitrogen in manure,and the relationship between the accumulated amount of release nitrogen in manure and the nitrogen absorbed by crop.The resultes indicated that formula y=x/(a+bx) suitable for the accumulated amount of release nitrogen in manure of aerobic and anaerobic incubated method within two months.The relationship between the accumulated amount of release nitrogen in aerobic and anaerobic incubated method and the amount of nitrogen absorbed by crop reach extreme marked level after seven days.The formula y =a+bx suitable for the aerobic incubated-intermission drip washing method within one year.The incubated time was extended.The formula y=x/(a+bx) was suitable for the method.The lelationship between the accumulated amount of release nitrogen in aerobic incubated-intermission drip washing method and the amount of nitrogen absorbed by crop reach marked level after one month extreme marked level after four months.