CN103931408A - Zoysia japonica seedling overwintering protection method for delayed sowing in northern area - Google Patents
Zoysia japonica seedling overwintering protection method for delayed sowing in northern area Download PDFInfo
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- CN103931408A CN103931408A CN201410186281.4A CN201410186281A CN103931408A CN 103931408 A CN103931408 A CN 103931408A CN 201410186281 A CN201410186281 A CN 201410186281A CN 103931408 A CN103931408 A CN 103931408A
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Abstract
The invention provides a zoysia japonica seedling overwintering protection method for delayed sowing in the northern area. By the application of the technologies of water and fertilizer processing, mulching film temperature increasing for prolonging of the growing period, rolling in the period of dormancy, soil covering for protection, scientific soil covering ratio, rolling and soil supplement during thawing in the early spring, watering and scarification in the period of seedling establishment, and the like, the growing period of a primary lawn sowed in a delayed mode is prolonged, all growth indexes reach the standard required before a normal lawn overwinters after seedlings grow for another 20-25 days serving as the prolonged growing period, and the seedlings can overwinter successfully due to protection of overwintering protection measures. The zoysia japonica seedling overwintering protection method solves the problem that due to delaying of the construction progress, the time of completion of the whole landscape engineering is affected, and also achieves the technical aim that warm-season lawns overwinter successfully.
Description
Technical field
The present invention relates to a kind of warm season turf Korea lawn grass and incur loss through delay sowing in sowing time, the maintenance process of the Overwintering Seedlings protection that normal maintenance cannot be survived the winter, particularly a kind of applicable the northern area of China warm-season turf children level ground large area Preservation method of surviving the winter.
Background technology
Korea lawn grass (Zoysia japonica) is warm season gramineous lawn, has flourishing stolon and root-like stock, and suitable growth temperature is 26～32 ℃.This blade of grass sheet good springiness, can form well, be rich in flexible lawn.No matter Korea lawn grass physiological resistance or annidation are all better than other grass seeds, especially resistance to trample.Korea lawn grass toughness is strong, good springiness, drought-resistant, impoverishment tolerant, disease and insect resistance, and suitable plantation area is wide.Its management is relatively extensive, and maintenance cost is low, is one of best grass seeds of football pitch, golf course and opening greenery patches and soil and slope protection.Korea lawn grass is becoming generally the lawn plant for golf course, service platform and the alley lawn of Beijing International Golf Course, Tianjin Beijing-Tianjin golf course, the blue or green golf course of Tianjin willow, Shengjing city, Shenyang International Golf Course all adopt Korea lawn grass, highway slope protection and opening greenery patches also all adopt Korea lawn grass grass seeds, are a kind of universally acknowledged good warm season turfs.
In south China area, the climate restriction hardly of Korea lawn grass seeding lawn establishment time, not only grows fine, and is green throughout the year; And in northern China, be subject to the restriction of the special climate ecological condition that Seasonal Temperature Difference is larger, and Korea lawn grass seeding method floor space is subject to strict time restriction, and the sowing time should not be excessively late, otherwise, broadcast rear First Year seedling too little, frost resistance is poor, can not safe overwintering.The best period that has 2 seeding lawn establishments at northern cold-season turfgrass for 1 year: the one, spring, the 2nd, autumn.But Korea lawn grass only has a best seeding lawn establishment time, be May to June, can not surpass the latest sowing mid-July.This is that Growth of Seedling is slow because the Korea lawn grass germination and emergence time is longer, and Korea lawn grass leaf cell is very sensitive to low temperature.Work as the maximum air temperature autumn is 25-27 ℃, and when the minimum air temperature is 14-16 ℃, low level leaf starts to become yellow green; When the maximum air temperature is 22-24 ℃, when the minimum air temperature is 12-14 ℃, middle part blade is obvious chlorisis also; Along with the further reduction of temperature, leaf senile is accelerated, and when the maximum air temperature is 14-16 ℃, when the minimum air temperature is 4-6 ℃, terrestrial stem phyllopodium is originally withered and yellow.Visible, when temperature promotes chlorophyll degradation during lower than 15 ℃, Korea lawn grass stops growing.And at northern area, at the beginning of general 8 the end of month to 9 month, entering autumn, the minimum air temperature can reach 14-16 ℃.
As everyone knows, in landscape engineering work progress, before floor space, need to carry out site clearing, passenger's soil, beat deep well, the operations such as sprinkling irrigation, soil melioration, soil cultivation, level ground bed moulding, the sedimentation of watering, thin whole ground are installed.In production practices, usually occur affecting construction speed because above-mentioned operation can not complete on time, cause level ground bed not reach sowing condition or due to reasons such as construction delay and rainfalls, make the sowing time miss the best seeding lawn establishment time.If adopt next year sowing, not only increased engineering cost, and incured loss through delay the afforestation project duration.Also have the continuation taked to sow, by conventional overwinter management, find that Korea lawn grass children level ground is almost difficult to survive the winter, namely Second Year can not be revival from transplanting spring, and survival rate is extremely low.
Therefore, how to solve the in the situation that of evening Korea lawn grass sowing time and also can protect seedling to survive the winter smoothly, the impact that the construction period causes engineering cost, engineering effort of applying and reduce on Korea lawn grass in afforestation has important practical significance.
Summary of the invention
In order to address the above problem, to the invention provides and a kind ofly in the northern area Korea lawn grass sowing duration, catch up with in July 20 to Augusts 25 Time of Day sections, the method that can protect young level ground to survive the winter smoothly.Method of the present invention is applied in afforestation lawn large area planting engineering, can avoid because the Korea lawn grass of missing that construction delay brings is sowed the adverse effect that Best Times causes young level ground overwintering death, extended the time period of Korea lawn grass sowing, for Korea lawn grass provides more wide prospect in the application of northern area.
The technical solution used in the present invention is: a kind of Korea lawn grass Overwintering Seedlings guard method that postpones sowing for northern area, comprises the steps:
1) promote lawn growth autumn
1.1) fertilising: to postponing the Korea lawn grass seedling of sowing, autumn, when the minimum air temperature is down to 14-16 ℃, use urea and potassium dihydrogen phosphate mixed fertilizer; Preferably, fertilizing amount is: urea 8-10g/m
2, potassium dihydrogen phosphate 4-6g/m
2;
1.2) water: after fertilising, water immediately, make bed top layer, level ground 25-30cm keep moistening;
1.3) overlay film: carry out overlay film after watering, adopt the white plastic mulching of thickness 4-6 μ m, make temperature in the shed reach 26-35 ℃;
1.4) remove film: Korea lawn grass seedling grows to 2-3 tiller in film, and occur after stolon and root-like stock, in the time of minimum air temperature 8-12 ℃, remove film.
2) resting stage maintenance
2.1) roll extrusion: when the minimum air temperature is 4-6 ℃, be turfgrass bed of roller roll extrusion of 100kg left and right by weight;
2.2) earthing: after roll extrusion, composite earth uniform fold is surperficial in lawn; Described composite earth is comprised of sand, turfy soil and fertilizer; Composite earth is that sand, turfy soil and fertilizer are by weight the mixing of 1:0.5-0.7:0.3-0.5; Described fertilizer is sheep excrement or horsehit; Thickness of earth covering is 0.6-1cm;
2.3) water: when the maximum air temperature is 6-8 ℃ above freezing, when the minimum air temperature is subzero 2-5 ℃, water permeable one time.
3) turn green before maintenance
3.1) roll extrusion: March next year, when the maximum air temperature is more than 0 ℃, the minimum air temperature below 0 ℃ time, with weight be the roller of 100kg left and right every turfgrass bed of left and right roll extrusion in 10 days, roll extrusion is 3 times altogether;
3.2) mend soil: after roll extrusion, the lawn exposed to local root system supplements earthing by composite earth, and thickness is 0.5-0.8cm;
3.3) water: April next year, water permeable twice;
3.4) loosen the soil: at lawn duration of germination, with wooden rake, on bed surface, level ground, rake the soil level one time, degree of depth 0.5-0.8cm.
The present invention, postpones the Korea lawn grass Overwintering Seedlings guard method of sowing for northern area, be applicable to the zoysia japonica seed that northern area was sowed between 20-August 25 July.The protection of surviving the winter of the Korea lawn grass seedling that inapplicable the Northeast was sowed after 8 the end of month.
The invention has the beneficial effects as follows:
1. avoid postponing the risk of the floor space failure that sowing causes: by plastic mulching in autumn, heat and the technical measures such as earthing, make to miss the Korea lawn grass children level ground that the sowing time limit postpones sowing and survive the winter smoothly, avoided postponing the risk of seeding lawn establishment failure.
2. extend the northern area Korea lawn grass sowing time: Korea lawn grass is May-June in the north between suitable sowing time, by the present invention, expanded to about May-August 25 in the Korea lawn grass sowing time limit.
3. guarantee the smooth completion of afforestation project: for afforestation project construction speed, incur loss through delay and won the valuable time, thereby can make engineering complete smoothly.
4. save engineering cost: surviving the winter smoothly of Korea lawn grass children level ground, avoided the secondary construction of next year reseeding floor space, save the raw material such as a large amount of seeds, artificial, chemical fertilizer, thereby reduced Construction Cost, saved engineering cost.
5. saving water resource: northern area spring and autumn rainfall is few, wind is larger, evaporation is fast, and therefore at these two arid seasons, especially young level ground, lawn (the shallow drought resistance of root system is poor) water requirement is very large, general 5-7 days needs water water one time, after plastic mulching in autumn, the moisture loss of having avoided earth's surface transpiration to cause, has ensured the supply that needs supplementary large quantity of moisture during growth of seedling, the plastic mulching of 20-25 days is saved the lawn of 3-4 time and is watered, thereby has saved a large amount of water resources.
6. by method of the present invention, through practice, the survival rate in next year reaches more than 95%.
Embodiment
Embodiment postpones the Korea lawn grass Overwintering Seedlings guard method of sowing for areas of Shenyang
(1) sowing: in sowing on August 10 zoysia japonica seed, adopt conventional method sowing and management.
(2) protection of surviving the winter
1) promote lawn growth autumn
1.1) fertilising: when the minimum air temperature is down to 14-16 ℃, start to use urea and potassium dihydrogen phosphate mixed fertilizer.Fertilizing amount is: urea 8-10g/m
2, potassium dihydrogen phosphate 4-6g/m
2;
1.2) water: after fertilising, water immediately, make bed top layer, level ground 25-30cm keep moistening;
1.3) overlay film: carry out overlay film after watering, adopt the white plastic mulching of thickness 4-6 μ m, thereby guarantee nutrient that seedling growth stage is required and the supply of moisture, and improved the temperature of level ground bed, make temperature in the shed reach 26-35 ℃, be conducive to the growth of Korea lawn grass seedling;
1.4) remove film: covering with plastic film has guaranteed the required temperature condition of Korea lawn grass growth of seedling in autumn, extended the vegetative period of Korea lawn grass, in addition suitable liquid manure is supplied with, extended the vegetative period of Korea lawn grass, make the Korea lawn grass seedling that postpones sowing grow to 2-3 tiller, and start to occur stolon and root-like stock.When being 8-12 ℃, removes the outdoor minimum air temperature film.
1.5) management before dormancy: mulch film heats, can grow some weeds, should manually weed out the rank grass one time after removing film.Depending on surface arid situation, when level ground bed surface 3-5cm soil layer, see dryly, should water one time.
2) resting stage maintenance
2.1) roll extrusion: mid-October, when the extraneous minimum air temperature is 4-6 ℃, Zoysia Japonica Turf enters resting stage (almost there is no greenery) completely, it by weight, is turfgrass bed of roller roll extrusion of 100kg left and right, both can prevent from that soil pore space is excessive and affect lawn surviving the winter, can flatten again bed surface, level ground, for the even earthing of next step provides advantage (bed surface, level ground is rough and uneven in surface, there will be the even phenomenon of became uneven during earthing);
2.2) earthing: after roll extrusion, the sieve by composite earth with aperture 4-5mm, uniform fold is in surface, lawn, and thickness of earth covering is 0.6-1cm; Described composite earth is by sand, turfy soil and become thoroughly decomposed and the sheep excrement (or horsehit) pulverized forms by weight 1:0.5-0.7:0.3-0.5;
2.3) water: in November, when the maximum air temperature is 6-8 ℃ above freezing, when the minimum air temperature is subzero 2-5 ℃, water permeable one time.
3) turn green before maintenance
3.1) roll extrusion: March next year, when the maximum air temperature is more than 0 ℃, the minimum air temperature below 0 ℃ time, with weight be the roller of 100kg left and right every turfgrass bed of left and right roll extrusion in 10 days, roll extrusion is 3 times altogether; After early spring, soil thawed, due to alternate freezing and thawing, lawn soil is produced loosening, roll extrusion increases the packing of soil and root system, the impact of minimizing strong wind in spring on lawn, the growth of protection lawn root system.While noting roll extrusion, soil moisture content is moderate, unsuitable roll extrusion when too dry or too wet;
3.2) mend soil: after roll extrusion, the lawn exposed to local root system supplements earthing by composite earth for the first time, and thickness is 0.5-0.8cm; Described composite earth is by sand, turfy soil and become thoroughly decomposed and the sheep excrement (or horsehit) pulverized forms by weight 1:0.5-0.7:0.3-0.5;
3.3) water: water April permeable twice;
3.4) loosen the soil: at lawn duration of germination in April, with wooden rake, on bed surface, level ground, rake the soil level one time, degree of depth 0.5-0.8cm, prevents that the blocked up and topsoil of earthing from hardening and affecting lawn and sprout (can not adopt the creeper of pointed tooth to loosen the soil, take seedling while preventing from loosening the soil out of).
(3) result
Through the method for the invention described above, Korea lawn grass turns green smoothly at the beginning of 4 the end of month-5 month, and survival rate reaches more than 95%.
Claims (5)
1. for northern area, postpone a Korea lawn grass Overwintering Seedlings guard method for sowing, it is characterized in that comprising the steps:
1) promote lawn growth autumn
1.1) fertilising: to postponing the Korea lawn grass seedling of sowing, autumn, when the minimum air temperature is down to 14-16 ℃, use urea and potassium dihydrogen phosphate mixed fertilizer;
1.2) water: after fertilising, water immediately, make bed top layer, level ground 25-30cm keep moistening;
1.3) overlay film: carry out overlay film after watering, adopt the white plastic mulching of thickness 4-6 μ m, make temperature in the shed reach 26-35 ℃;
1.4) remove film: in film, Korea lawn grass seedling grows to 2-3 tiller, and occurs after stolon and root-like stock, removes film in the time of minimum air temperature 8-12 ℃;
2) resting stage maintenance
2.1) roll extrusion: when the minimum air temperature is 4-6 ℃, be turfgrass bed of roller roll extrusion of 100kg left and right by weight;
2.2) earthing: after roll extrusion, in surface, lawn, described composite earth is comprised of sand, turfy soil and fertilizer by composite earth uniform fold;
2.3) water: when the maximum air temperature is 6-8 ℃ above freezing, when the minimum air temperature is subzero 2-5 ℃, water permeable one time;
3) turn green before maintenance
3.1) roll extrusion: March next year, when the maximum air temperature is more than 0 ℃, the minimum air temperature below 0 ℃ time, with weight be the roller of 100kg left and right every turfgrass bed of left and right roll extrusion in 10 days, roll extrusion is 3 times altogether;
3.2) mend soil: after roll extrusion, the lawn exposed to local root system supplements earthing by composite earth, and thickness is 0.5-0.8cm;
3.3) water: April next year, water permeable twice;
3.4) loosen the soil: at lawn duration of germination, with wooden rake, on bed surface, level ground, rake the soil level one time, degree of depth 0.5-0.8cm.
2. a kind of Korea lawn grass Overwintering Seedlings guard method that postpones sowing for northern area according to claim 1, is characterized in that: 1.1) in fertilising step, fertilizing amount is: urea 8-10g/m
2, potassium dihydrogen phosphate 4-6g/m
2.
3. a kind of Korea lawn grass Overwintering Seedlings guard method that postpones sowing for northern area according to claim 1, is characterized in that: described composite earth is that sand, turfy soil and fertilizer are by weight the mixing of 1:0.5-0.7:0.3-0.5.
4. a kind of Korea lawn grass Overwintering Seedlings guard method that postpones sowing for northern area according to claim 1, is characterized in that: 2.2) in earthing step, thickness of earth covering is 0.6-1cm.
5. a kind of Korea lawn grass Overwintering Seedlings guard method that postpones sowing for northern area according to claim 1, is characterized in that: the Korea lawn grass seedling of described delay sowing is the zoysia japonica seed of sowing between 20-August 25 July in northern area.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104186179A (en) * | 2014-09-09 | 2014-12-10 | 天津海林园艺环保科技工程有限公司 | Quick turf cultivation method |
| CN104335806A (en) * | 2014-10-09 | 2015-02-11 | 辽宁大学 | Method suitable for winter sowing of zoysia japonica in northern area |
| CN106613243A (en) * | 2016-12-23 | 2017-05-10 | 江苏农林职业技术学院 | Method for enabling zoysia japonica to turn green earlier |
| CN108668725A (en) * | 2018-03-20 | 2018-10-19 | 东营国科生态环境工程有限公司 | A kind of method that vetiver is cold-proof in Winter in North China |
| CN109328900A (en) * | 2018-12-17 | 2019-02-15 | 湖北瑞晟农业科技有限责任公司 | A kind of overwintering protection technique application for protecting L.nummularia 'Aurea' |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104186179A (en) * | 2014-09-09 | 2014-12-10 | 天津海林园艺环保科技工程有限公司 | Quick turf cultivation method |
| CN104335806A (en) * | 2014-10-09 | 2015-02-11 | 辽宁大学 | Method suitable for winter sowing of zoysia japonica in northern area |
| CN106613243A (en) * | 2016-12-23 | 2017-05-10 | 江苏农林职业技术学院 | Method for enabling zoysia japonica to turn green earlier |
| CN108668725A (en) * | 2018-03-20 | 2018-10-19 | 东营国科生态环境工程有限公司 | A kind of method that vetiver is cold-proof in Winter in North China |
| CN109328900A (en) * | 2018-12-17 | 2019-02-15 | 湖北瑞晟农业科技有限责任公司 | A kind of overwintering protection technique application for protecting L.nummularia 'Aurea' |
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| CN103931408B (en) | 2015-07-29 |
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