Here vegetation is exiguous, edaphic barren, drought little rain, natural disaster is frequent.
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2. 长期生长在恶劣的沿海气候和环境中使其具有较强的抗盐、抗风、耐瘠薄、抗涝能力。
The adverse circumstances and harsh ocean climate make it even more salt-resisting, wind-breaking, poor soil-tolerating and waterlog-enduring.
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3. 粉苞苣属主要分布于砾石地和沙地，花期长，抗旱，耐瘠薄，自播力低，主要通过根蘖繁殖。
Chondrilla juncea L. distribute mostly in gravel and sandlot, fight a drought, endure barren, there is a long florescence, the self-sow power is low, it propagate by root sprout.
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4. 它们是树龄、林分密度、割脂、降雨量、温度、粘性土、石砾土、土层瘠薄、积水、病虫危害。
These were tree age, stand density, resin tapping, rainfall, temperature, clay soil, stone soil, soil depth, water logging, and other diseases and insect pests.
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5. 在干旱瘠薄山地，灌木保持水土、涵养水源、改善生态环境等方面具有乔木树种不可代替的作用。
In the arid and poor mountain lands, shrubs are used to conserve soil, water and headwater and to improve ecological environment, which can not be replaced by any tree species.
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6. 该方法选育的棉花品种产量高、品质好、耐瘠薄、抗逆性强，而且省时、省工，便于推广应 用。
The cotton bred by the method has high yield and quality, barren resistance, high stress resistance as well as time and power saving and is convenient for popularization and application.
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7. 世界范围内，相当一部分玉米种植在十分瘠薄的土壤上，氮素缺乏成为玉米生产最重要的限制因子之一。
In the world wide, most of maize was planted in poor soil, and nitrogen is one of most important nutrition elements for maize growing, especially for maize yield.
Site preparation quality in poor overflow land influences not only on survival rate of forest in the same year, but also on growth and annual increment after survival of forest.
The results show that there are serious soil erosion and desertification and extensive land degradation in this catchment because of irrational land use and improper managements.
The principles of ecology are used to analyse physical properties of soils in shrub forests, hydrolic benefits and drought resistances thereby to conclude…
It has the property of strong drought-resistance but can not stand the high soil moisture environment. Therefore, it is a suitable liana to the afforestation in barren mountain area.
It has the property of strong drought-resistance but can not stand the high soil moisture environment. Therefore, it is a suitable liana to the afforestation in barren mountain area.
