论文部分内容阅读
保水剂在造林中是一项新技术。保水剂的物理形状为规则或不规则的颗粒状、片状和粉末状固体。通过多年试验证明,造林绿化适宜采用2~4mm粒径的大颗粒保水剂产品,其既能满足土壤孔隙空气通畅的要求,所贮水分80%~85%又可被林木高效利用,一些粉状保水剂产品,使用时若与土壤混合不均匀,吸水后容易在局部产生糊状凝胶,造成相当范围的土壤蓄水过高,严重影响土壤通气和林木生长,个别甚至造成林木枯死。粉末状保水剂一般不用于拌土,而适合于种子包衣或蘸根。
Water retention agent in afforestation is a new technology. The physical shape of the water-retaining agent is regular or irregular granular, flaky and powdered solid. Through many years of experiments, afforestation is suitable for large particles of 2 ~ 4mm particle size water retention agent products, which not only meet the requirements of the soil pore air patency, the stored moisture 80% ~ 85% can be efficient use of trees, some powdery Water retaining agent products, when used with the soil mixed unevenly, after the water is easy to locally produce a paste gel, resulting in a considerable range of soil water storage, seriously affecting the soil aeration and forest growth, and even individual caused dead trees. Powdery water-retaining agent is generally not used for mixing soil, but suitable for seed coating or dipping roots.