CN1602657A - Aquatic vegetation recovery method in enriching shallow lake - Google Patents

Aquatic vegetation recovery method in enriching shallow lake Download PDF

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Publication number
CN1602657A
CN1602657A CNA2004100656604A CN200410065660A CN1602657A CN 1602657 A CN1602657 A CN 1602657A CN A2004100656604 A CNA2004100656604 A CN A2004100656604A CN 200410065660 A CN200410065660 A CN 200410065660A CN 1602657 A CN1602657 A CN 1602657A
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China
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water
water chestnut
chestnut
plantation
lake
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CN1288958C (en
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刘正文
李宽意
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Nanjing Institute of Geography and Limnology of CAS
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Nanjing Institute of Geography and Limnology of CAS
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Abstract

Recover hydrophytes in the nourishment saturated fleet lake and rivers. The character is plant the water chestnut. Factors of cultivate: 1) choose of Xiaobai chestnut, shaobo chestnut, shajao chestnut to resist the wind and waves, breed of good tenacity. 2) The water in the lake is still and closed. The depth is 1 to 2 meters not more than 4 meters. The mud under water is fertile and contain high septic. The sullage is 0.2 meters depth. 3) The way of cultivate include chestnut seed, sow and sprout sow. Use them separate or use them in the same time is the way. Water chestnut should preserve from wind and waves.

Description

In nutrition enriched shallow lake, recover the method for aquatic vegetation
Technical field
The present invention relates to the ecological protection of water body in lake, particularly a kind of method of in nutrition enriched shallow lake, recovering aquatic vegetation.
Background technology
The lake is as the important component part of earth surface land hydrosphere, in long-term growth and evolutionary process, formed the ecosystem, when maintaining self ecological balance with complete structure, also maintain the regional ecological balance, thereby manifested its distinctive Ecosystem Service and value.But owing to be subjected to the restriction of the level of understanding, and human developing, utilizing in the process of lake, often only pay attention to the carrier that it is a resource, and ignore its ecological value as function carrier.China's freshwater lake mostly is shallow water body greatly, and it is not only one of main source of human freshwater resources, also is to safeguard good ecotope and the key factor that promotes sustainable development.In recent years, because rapid economy development is subjected to the driving of part, short-term interests, excessive development is grown in lake net culture in enclosure, blocks the fairway on the one hand and causes water transportation not smooth, influences flood discharge and water supply; Because excessive bait throwing in makes lake nutritive salt increase, eutrophication aggravation, cause the original ecosystem serious degradation in China lake on the other hand, performance characteristic is that water quality deterioration, blue-green alga bloom frequently break out, and lake eutrophication presents fast development trend.At present, lake water quality deterioration, eutrophication have become one of great environmental problem that China lake faces.From integral body, the eutrophic lake of China causes owing to the irrational utilization of people mostly, culture in enclosure is grown and the excessive development of big water surface aquaculture has caused careless type lake high-quality aquatic vegetation to disappear as net, the lake self-regulating function is suppressed or loses, lake water quality deterioration, eutrophication aggravation, careless type lake changes to algae type lake.
Summary of the invention
The purpose of this invention is to provide a kind of method of in nutrition enriched shallow lake, recovering aquatic vegetation, by the aquatic floatingleaved plant selecting to suit in eutrophication water, to plant and impose correct cultivation method to form group's scale, improve water body environment, repair aquatic ecosystem.
Above-mentioned purpose of the present invention is achieved in that the method for recovering aquatic vegetation in nutrition enriched shallow lake, it is characterized in that in eutrophication water the aquatic floatingleaved plant water chestnut of plantation, the plantation main points are as follows: 1) select to comprise Xiao Bai water chestnut, Shaoboling, Shaojiaoling wind wave resistance, the kind that the climing toughness of stem is strong; 2) the plantation water body is a relative closure water body in the lake, depth of water 1-2m, and the darkest 4m that is no more than, soft fertile, the humus content of substrate is more than 10%, and mud should be more than 0.2m; 3) cultivation method comprises sowing of water chestnut kind and two kinds of seedling plantations, uses individually or simultaneously, and the sowing of water chestnut kind is adopted to embark on journey and evenly sowed seeds line-spacing 3-4m, every mu of seeding quantity 20-25kg; The seedling plantation selects to divide the water chestnut transplantation of seedlings of dish phase, and 4-7 of water chestnut seedling is a branch of, uses long handle wood wooden fork fork to live seedling binding yarn head during plantation, and insert in the bed mud and fix, distance between rows and hills 3-4m, when using simultaneously, water chestnut kind sowing row staggers with water chestnut transplantation of seedlings row.Must the disappear wave protection of water chestnut growing area adopts purse seine every wave and the biological grid wave that comprehensively disappears, and purse seine is in the peripheral piling of water chestnut growing area every wave, and pilespacing 25-30m is that the net sheet of 0.1-0.12m surrounds the relative closure zone with the water chestnut growing area with mesh then; The biological grid wave that disappears is to draw straw rope at the neat water surface of water chestnut growing area in stake, fastens a branch of water peanut every 0.3-0.5m on the straw rope and forms biozone waterborne, and the biozone intersects in length and breadth goes into biological grid.During the sowing of water chestnut kind, be sign, embark on journey and evenly sow seeds with biological grid.
Select the reason of water chestnut to be: 1) other floatingleaved plants such as Gorgon fruit, water shield, water lily etc. relatively, the water chestnut plant is relatively large, and growth is very fast, can utilize more nutriment in the eutrophication water plantation; 2) stronger capacity of anti-storm is arranged relatively, Gorgon fruit, water shield, water lily etc. generally live in the hydrostatic water body; 3) height of anti-the water body eutrophication degree.Because water chestnut does not carry out photosynthesis in the budding stage (sprouting to the water outlet of water chestnut seedling), supply with nutrient by water chestnut kind self, therefore water body eutrophication degree is less relatively to the growth effect of water chestnut, we can say the water-fast body eutrophication of water chestnut, and promptly water body eutrophication degree does not have influence substantially to the plantation of water chestnut.And for water shield etc., because percentage of seedgermination is low, main by the climing vegetative propagation of stem, water body eutrophication degree has considerable influence to its growth, will stagnate and grows even death owing to the illumination deficiency the following plant of compensation depth (photosynthesis of plant synthetic with consume the water depth of expenditure when equating be compensation depth); 4) water caltrop is the food that everybody likes food, has certain economic to be worth.5) the plantation difficult point mainly is the high sea influence, therefore plants water body and should be the relative closure water body and adopt the wave protection that disappears.
Advantage of the present invention and effect: water chestnut (Trapa L.) is annual aquatic herbaceous plant, and the water chestnut fruit can be eaten raw, prepared food and system Tapioca starch, and stem, leaf can be made green fodder or macerate system green manure, and two kinds of root systems of water chestnut also can absorb nutrient in mud and the water.Because aquatic vegetation can absorb nutritive salt in the water effectively, set bed mud, clarification water quality promote the two packing spaces sexual development, and the secretion of high water plants can suppress the excess growth of rudimentary plant-algae simultaneously, realizes the benign cycle of lake ecosystem.Generally speaking, water plants is that main primary producer's water quality is better in the lake, and landscape value such as higher fishery and tourism are arranged, and generally not have the feature of pollution and eutrophication water is a large amount of breedings of blue-green alge.Therefore planting water chestnut not only can increase economic benefit, can also effectively purify water, and reduces the lake eutrophication level.This method is simple and practical, can recover the floatingleaved plant in the water body rapidly, for nutrition enriched shallow lake recover aquatic vegetation, realistic meaning has purified water.
Embodiment
Plantation with water chestnut in the nutrition enriched shallow lake of the Yangtze river basin is an example:
Kind is selected: select wind wave resistance, kind that the climing toughness of stem is strong, as Xiao Bai water chestnut, Shaoboling, Shaojiaoling etc.
Plantation environmental selection: water chestnut growing area area 15-50ha, depth of water 1-2m, the darkest 4m that is no more than; Substrate soft fertile, humus content is high (more than 10%), mud is more than 0.2m.
Wave disappears: comprehensively use purse seine every wave and the biological grid unrestrained technology that disappears.In the peripheral piling of water chestnut growing area, pilespacing 25-30m, be that the net sheet of 0.1-0.12m surrounds the relative closure zone with the water chestnut growing area with mesh then, the neat water surface draws straw rope in stake at last, fasten a branch of water peanut every 0.3-0.5m on the straw rope and form biozone waterborne, the biozone of direction is crossed as biological grid in length and breadth, each grid area 600-900m 2
Plantation:, comprehensively use sowing of water chestnut kind and seedling cultivating technology for guaranteeing to plant successfully.Late March is to mid-April, and water temperature stability carries out the sowing of water chestnut kind in time more than 10 ℃, is sign with biological grid, and embark on journey and evenly sow seeds, about line-spacing 3-4m, every mu of seeding quantity 20-25kg; According to water chestnut kind growing state, the plantation of mid-June to early July divides the water chestnut seedling of dish phase, and 4-10 of water chestnut seedling is a branch of, uses long handle wood wooden fork fork to live seedling binding yarn head when planting, and inserts in the bed mud and fixes, distance between rows and hills 3-4m.Water chestnut kind sowing row will stagger with water chestnut transplantation of seedlings row.The water chestnut seedling is reseeded in the bad place of water chestnut kind development growth, and 5-10 of water chestnut seedling is a branch of.

Claims (3)

1, recover the method for aquatic vegetation in nutrition enriched shallow lake, it is characterized in that the aquatic floatingleaved plant water chestnut of plantation in eutrophication water, the plantation main points are as follows:
1) selects to comprise Xiao Bai water chestnut, Shaoboling, Shaojiaoling wind wave resistance, the kind that the climing toughness of stem is strong;
2) the plantation water body is a relative closure water body in the lake, depth of water 1-2m, and the darkest 4m that is no more than, soft fertile, the humus content of substrate is more than 10%, and mud should be more than 0.2m;
3) cultivation method comprises sowing of water chestnut kind and two kinds of seedling plantations, uses individually or simultaneously, and the sowing of water chestnut kind is adopted to embark on journey and evenly sowed seeds line-spacing 3-4m, every mu of seeding quantity 20-25kg; The seedling plantation selects to divide the water chestnut transplantation of seedlings of dish phase, and 4-7 of water chestnut seedling is a branch of, uses long handle wood wooden fork fork to live seedling binding yarn head during plantation, and insert in the bed mud and fix, distance between rows and hills 3-4m, when using simultaneously, water chestnut kind sowing row staggers with water chestnut transplantation of seedlings row.
2, according to the described method of recovering aquatic vegetation of claim 1, it is characterized in that must the disappear wave protection of water chestnut growing area, adopt purse seine every wave and the biological grid wave that comprehensively disappears, purse seine is in the peripheral piling of water chestnut growing area every wave, pilespacing 25-30m is that the net sheet of 0.1-0.12m surrounds the relative closure zone with the water chestnut growing area with mesh then; The biological grid wave that disappears is to draw straw rope at the neat water surface of water chestnut growing area in stake, fastens a branch of water peanut every 0.3-0.5m on the straw rope and forms biozone waterborne, and the biozone intersects in length and breadth goes into biological grid.
3, according to the method for claim 1 or 2 described recovery aquatic vegetations, when it is characterized in that the sowing of water chestnut kind, be sign, embark on journey and evenly sow seeds with biological grid.
CNB2004100656604A 2004-11-10 2004-11-10 Aquatic vegetation recovery method in enriching shallow lake Expired - Fee Related CN1288958C (en)

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CN1288958C CN1288958C (en) 2006-12-13

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1331385C (en) * 2005-06-03 2007-08-15 南京大学 Method for quick breeding of wild water-chestnut
US7758752B2 (en) 2005-09-05 2010-07-20 Research Center For Eco-Environmental Sciences, The Chinese Academy Of Sciences Composite material and method for removing harmful algal blooms and turning them into submerged macrophytes
CN101530029B (en) * 2009-04-03 2011-12-14 张敬武 Manufacturing and seeding methods for lake trapa seed bag
CN102487683A (en) * 2011-11-29 2012-06-13 中国科学院南京地理与湖泊研究所 Aquatic vegetation restoration and ecological preservation method for aquaculture slash/target water areas

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102037893B (en) * 2010-10-29 2012-05-30 中国科学院南京地理与湖泊研究所 Plant biological adaptability recovery method of water-body compact bottom sediment

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1331385C (en) * 2005-06-03 2007-08-15 南京大学 Method for quick breeding of wild water-chestnut
US7758752B2 (en) 2005-09-05 2010-07-20 Research Center For Eco-Environmental Sciences, The Chinese Academy Of Sciences Composite material and method for removing harmful algal blooms and turning them into submerged macrophytes
CN101530029B (en) * 2009-04-03 2011-12-14 张敬武 Manufacturing and seeding methods for lake trapa seed bag
CN102487683A (en) * 2011-11-29 2012-06-13 中国科学院南京地理与湖泊研究所 Aquatic vegetation restoration and ecological preservation method for aquaculture slash/target water areas
CN102487683B (en) * 2011-11-29 2013-12-04 中国科学院南京地理与湖泊研究所 Aquatic vegetation restoration and ecological preservation method for aquaculture slash/target water areas

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