Grassland restoration and reconstruction technology of abandoned construction land
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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) Generating 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 Sand cultivated land √ Others: abandoned industrial and mining construction land
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表 3
climatic province: Middle-temperate continental monsoon climate average annual precipitation /mm 300~450 Annual annual evaporation rate / mm 1600-2000 Annual temperature / ℃ 2.1~4.1 maximum air temperature /℃ 36.1~36.7 minimum air temperature /℃ -39.9~-34.3 Average annual wind speed / m / s 3.2~3.6 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 County, township or climate area, and give the longitude and latitude of the application location of the project.
To the province County (flag) The township climatic province longitude latitude height /m Hebei Province Kangbao County Three well Middle-temperate continental monsoon climate 114.499 41.840 1481
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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 √ Adventitia hill 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 √Admito flat sand Flat 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%) √ Others: raw soil 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% √ Severe involution of oneself √ Grassland: sheep grass, grass, needle grass, white lotus wormwood (what kind of community) 25-40% Artificial forest has dry shoot phenomenon Meadow: (What Community) > 40% The plantation has the death phenomenon else:
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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 Land preparation method: leveling
Level off: level the trenches and mounds in the project area, backfill the guest soil in the low-lying areas, and then suppress them, and then use rotary tillage with rotary tiller.May-June, completed before early summer 2. Soil improvement Improved method: apply organic fertilizer
Type of amendments: organic fertilizer
Quantity of amendments applied: not less than 15 kg / muIn May-June, in the process of rotary tillage 3. Apply fat Type of bottom fertilizer: biological bacterial fertilizer
Application quantity: 5 kg / muMay-June 4 Sowing Plant species: choose seeds with strong adaptability, better adapt to the cold and drought resistant growth on the dam, especially the local wild grass or good grass cultivated by training, such as bison grass.
Seed requirements: in line with the relevant standards of the national regulations of the grass seedlings.
Sowing method: grass seedlings with acupoint sowing, with small shovel or shovel in the exposed pit, digging depth 10.0cm, width about 5.0cm, must ensure that the existing plants as little as possible.
Sowing amount: the per-mu sowing volume is not less than 4, 000 plants.
Sounding depth: pit depth of 10.0cm.
Fertilization requirements: base fertilizer uses biological fertilizer, and topdressing uses biological fertilizer. The product must meet the national quality and technical standards, topdressing is generally in spring after green, branching, bud stage or each time after mowing combined with irrigation, the way of topdressing or foliar spraying, fertilization amount of 5 kg / mu, can be divided into bottom and topdressing.June-July, before the rainy season 5 Field management Enclosure: with, high standard immersion guardrail / wire fence (with or without), must do a comprehensive ban on grazing.
Fertilization situation: have, use biological bacteria fertilizer, fertilizer quantity of 5 kg (with or no, fertilizer type, fertilizer quantity, etc.).
Pest control: after forage grass sowing, strengthen field management, timely control diseases and pests. For pest control, high efficiency, low toxicity, economic and safe cypermethrin, and D botox are generally used for rodent control. The use of secondary poisoning and serious environmental pollution is strictly prohibited.annual 6. Other
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表 10
labour cost 2, 325 yuan / ha Mechanical cost 0Yuan / ha cost of material 31, 635 yuan / ha Water cost (if irrigation is required) 0Yuan / ha total cost 33, 960 yuan / ha
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