土面增温剂是一种农田化学复盖物,能抑制土壤水分蒸发,具有增温保墒、固沙压碱、抵御风吹水蚀等多种作用,从而改善植物生长条件,提高作物产量。 我国土面增温剂是1970年试制成功的。去年,全国生产总量达5,0O0吨以上,育苗移栽大田面积100多万亩。使用作物包括水稻、棉花、玉米、甘薯、多种林木和蔬菜,增产效果明显。如用于水稻育秧,其秧苗比露天对照有明显优势,出苗快,苗齐、苗壮,根系发达,叶 Soil surface warming agent is a farmland chemical covering, can inhibit the evaporation of soil moisture, with warming soil moisture, sand and alkali, to resist wind and water erosion and other effects, thereby improving plant growth conditions and improve crop yield. Soil warming agent in China was trial production in 1970. Last year, the country’s total output reached 5,00 tons, and more than 1 million mu of transplanting fields were planted. Use of crops including rice, cotton, corn, sweet potatoes, a variety of trees and vegetables, yield significantly. As used in rice seedling, the seedling has obvious advantages over the open-air control, fast emergence, seedling Qi, Miao Zhuang, roots developed, leaves