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土面增温剂是一种黄褐色的膏状物.PH值7～8,化学性质稳定.近年来,应用于林业育苗,效果很好.实践证明,施用土面增温剂,有增温、保墒、防寒的作用,有利于苗木的生长发育.据实测,4月份晴天最大增温值达10℃,日平均增温值为4～5℃.喷后11～14小时,增温值达7～8℃.喷洒一次,有效增温时间20天左右.使用土面增温剂,可使林业育苗的播种作业提前15天.
Soil warming agent is a yellowish brown paste. PH value of 7 to 8, chemical stability. In recent years, applied to forestry nursery, the effect is very good. Practice has proved that the application of soil surface warming agent, warming , Moisture, cold effect is conducive to the growth and development of seedlings.According to the measured sunny April maximum temperature value of 10 ℃, the average daily temperature value of 4 ~ 5 ℃. 11 to 14 hours after spraying, the warming value of 7 ~ 8 ℃. Spraying time, the effective warming time of about 20 days. Use soil warming agent, forestry seedlings can sowing operations 15 days in advance.