Restoration technology of moderately desertified farmland in Bashang Plateau
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表 1 Give a few answers, and choose up to five
Improve the biological power of the vegetation √Reduce, prevent, and restore degraded land √Improve or protect the soil √Protect or restore ecosystems To maintain / enhance biodiversity Reduce the risk of disasters (e. g. drought, droughts, floods, sandstorms, etc.) Adaptation to climate change and its effects (e. g., enhanced resilience to drought and warming) Mitigating climate change and its impacts (e. g. increased carbon sink capacity) √Generduce economic benefits (e. g. increased income) √Genering social benefits (e. g. reducing the consumption of natural resources and reducing poverty) Other uses (detailed description): ………………………………………………………………… 
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表 2
Semi-fixed sand Flow sand Sand grassland Salinized grass Activated wind erosion pit Degradation of woodland √Adventitious sand cultivated land else:
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表 3
climatic province: Middle-temperate continental monsoon climate average annual precipitation /mm 300~500 Annual annual evaporation rate / mm 1600~2000 Annual temperature / ℃ 2.1~9.2 maximum air temperature /℃ 36.1~36.7 minimum air temperature /℃ -39.9~-34.3 Average annual wind speed / m / s 2.4~3.6 Note: Precipitation, evaporation, air temperature and wind speed in the table are calculated according to the mean value of national weather stations from 1980 to 2010.
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表 4
To the province County (flag) The township climatic province longitude latitude height /m Hebei Province Zhangbei County Chabei Administrative District Middle-temperate continental monsoon climate 115.057 41.481 1385
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表 5 Terrain and landform conditions
height landform mean inclination aspect Slope < 100 m level the land √Flat slope (0-5%) √ adret √Upper slope 101-500 m hillside √Slow slope (6-15%) √ Schattenseite √Middle slope 501-1, 000 m Downs slope Slope (16-25%) √Admito half Yang slope √Down slope √ 1, 001-1, 500 m hillside fields Sharp slope (26-35%) √Vacation half Yin slope √ 1, 501-2, 000 m valley bottom 2, 001-2, 500 m sand dune 2501-3, 000 m Flat sand √Cyane gentle arable land
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表 6 Edaphic condition
agrotype soil texture Effective soil thickness Organic matter content of the topsoil soil hardness Soil gravel content √ aeolian sandy soil √ sandy soil 0-20 cm √High level (> 3%) tall √Less gravel soil (1-5%) √ chestnut soil √ sandy loam √ 20-50 cm √Medium size (1-3%) √ centre √Medium-gravel soil (5-10%) √ calcic brown soil doras √ 50-100 cm √Low (< 1%) √ low √Multi-gravel soil (10-30%) √ cinnamon soil clay √ 100-200 cm √Light gravel soil (30-50%) saline-alkali soil √ > 200 cm Medium gravel soil (50-70%) else: Heavy gravel soil (> 70%)
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表 7 Vegetation condition
vegetation form Community coverage Vegetation degradation Artificial forest: (what kind of plantation) < 5% Mild degradation Sand vegetation: (what community) 5-15% Moderate degradation Tuft: (What community) 15-25% Heavy degradation Grassland: (what kind of community) 25-40% Artificial forest has dry shoot phenomenon Meadow: (What Community) > 40% The plantation has the death phenomenon √Others: cultivated land
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表 8 Groundwater condition
The average buried depth √ < 1 m √ 3-5 m √ > 10 m √ 1-3 m √ 5-10 m
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表 9 For specific technologies, please select and fill in the relevant technical information according to the following technical categories.
sport technique segment technical essential Implementation of the season / month 1. Land preparation After the middle of May of the first year, the ploughing before the rainy season;
No more ploughing in the next year;
3-5 years later, the autumn no-tillage Spring Festival Gala is used before the planting, and then ploughed after the frequent wind erosion in mid-May. If the wind erosion occurs before the season, the southwest-northeast and north to south should be used, and the ridge height should exceed 30cm as far as possible, and the ploughing should not be leveled.spring 2. Sowing Plant species: alkali, oat grass and alfalfa
Seed requirements: it is required to meet the third-level standards stipulated by the state (seed purity and germination rate are GB 6142-1985). All forage seeds with broken awn, selected and quantitative packaging (the seed quality inspection report issued by the provincial seed quality inspection department is required).
Sowing method: using the seeder mixed sowing;
Sowing amount: 5~10kg;
Mixed ratio: alkali: oat grass: alfalfa =1:2:2 or 1:1:1.rainy season 3. Harvest homework High stubble to harvest the grass, the best stubble height of more than 30cm. Summer and autumn 4. Straw cleaning Grass awn machine harvesting bundle cleaning. In September 9. Other
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表 10
labour cost RMB 6, 750 yuan / ha cost of material RMB 2, 250 yuan / ha Water cost (if irrigation is required) Yuan / ha total cost RMB 9, 000 yuan / ha
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