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几年来,伊春林区苗圃升级建设、圃容、圃貌一新,推动了营林生产建设事业的发展。但也应看到在苗圃土壤管理上尚存一些弊病。仅据我们调查,本区少数苗圃单产不高,质量欠佳,圃地土壤存在营养元素配比失调,耕层土壤剥失,团粒结构缩减,土壤趋于粘化、酸化、通透性差,土温低,养分释放强度小,全量养分与速效养分逐年递减的事实。
Over the past few years, Yichun forest nurseries to upgrade the construction, nursery capacity, nursery appearance, promoted the development of forest production and construction. However, we should also see some shortcomings in soil management of nursery. According to our investigation, only a few nurseries in this area have a low yield and poor quality. There are imbalanced nutrition elements in the soil of the nursery, loss of topsoil, reduction of aggregate structure, tendency of soil to stick, acidification, poor permeability, Low temperature, the release of nutrients is small, the full amount of nutrients and available nutrients decreased year by year the fact.