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为验证“谷霖”牌有机物料腐熟剂在水稻直接还田上的应用效果,2015年在安徽省蚌埠市用网袋法进行了为期60d的田间试验,设对照(秸秆直接还田)、尿素(+秸秆还田)、腐熟剂(+秸秆还田)和腐熟剂+尿素(+秸秆还田)4个处理,观察测定还田后水稻秸秆的颜色、拉力和失重率变化。结果表明,随着时间的延长和腐解程度的加深,各处理秸秆的颜色逐渐变深、拉力逐渐变小、失重率逐渐增加;处理间也有很大差异,尿素处理可使秸秆腐解速度加快约10d,腐熟剂处理可使腐解速度加快约20d,效果最好的是腐熟剂+尿素处理,可使秸秆腐解速度加快20d以上。
In order to verify the application effect of “Gu Lin” brand organic material composting agent in the direct rice returning to the field, a 60-day field experiment was conducted by net bag method in Bengbu, Anhui Province in 2015. The control (direct straw returning) Urea (+ straw returning), maturity (+ straw returning) and maturity + urea (+ straw returning). The changes of color, tension and weight loss of rice straw were observed and determined. The results showed that with the prolongation of time and the deepening of decomposition, the color of straws became darker and the pulling force became smaller and the weightlessness rate gradually increased. There was also a great difference among the treatments. Urea treatment could accelerate the decomposition of straw. About 10d, decomposing agent can make decomposing speed increase about 20d, the best effect is decomposing agent + urea processing, which can accelerate the decomposition rate of straw more than 20d.