白柠条是多年生豆科灌木,具有抗寒、耐旱、耐瘠薄、防风固沙、保持水土、改良土壤等优良特性。白柠条幼树通常在5～6年进入开花结实期,7～8年后进入结实盛期,30年后进入衰老期,在立地条件好的情况下,树龄可达70年以上。白柠条萌芽力很强,平茬后能萌发大量新枝,成幼林经过平茬均能促进其丛生和旺盛生长。但在生长环境和社会环境不好的情况下,白柠条的寿命会显著缩短,且严重影响种实产量。伊克昭盟库布齐西北部的柠条林区,由于长期沿袭旧的自然放牧办法,以及只顾第二性生产(指畜产品),不顾第一性生 White kale is a perennial mesquite shrub, with cold, drought, barren, wind and sand, soil and water conservation, soil improvement and other fine features. Lichen saplings usually flowering and fruiting in 5 to 6 years, 7 to 8 years later, and enter into the mature period. After 30 years, they enter the senescence stage and reach 70 years old under good site conditions. Germination of white kelp very strong, after stubble can germinate a large number of new branches, into young forest after stubble can promote its tufted and strong growth. However, in the growth environment and social environment is not good, the life expectancy will be significantly reduced, and seriously affect the actual yield. Due to the long-term practice of the old natural grazing method and the secondary sexuality (referring to livestock products), the Caragana Forest Region in the northwestern part of Kubuqi, Ik Chok Meng ignored the first-sex