家庭生态农场的氮素营养生产分析

Analysis of Nitrogen Production in Ecological Household Farm.

引言土地的沙漠化也许是人类文明进程所付出的最沉重代价。我国北方干旱地区是一个巨大的潜在“沙漠化温床”,巳沙化土地达3.

Characteristics of N input,output and translocation are studied using system analysis for an ecological household farm suffering severe sand erosion.Taking advantages of topographic gathering of nutrients and selecting low-flat land to establish'little oasis'using intensively cultivated crops and high-yield forage woods is demenstrated as a break through for the agricultural development of these regions. The steady support from farming,grassland grazing in summer and enclosed breeding with dry fodder of weed and tree leaves are the three guaranties for the success of animal husbandry characterized by Tan sheep.