A protection method suitable for overwintering zoysia japonica in liaoning region

Abstract

The application provides a protection method suitable for St. Augustine grass overwintering in Liaoning area. The method comprises two parts: one is the protection method before overwintering in autumn, which comprises three times of pruning, three layers of covering and watering, and geotextile covering; the other is the treatment method in spring, which comprises watering, removing the geotextile, covering the mulch, and removing the mulch. The application uses agricultural solid waste as overwintering protection material, and combines with the corresponding management method, so that the St. Augustine grass overwinters smoothly. The method has the advantages of low cost and stable and durable protection effect.

Description

Technical Field

[0001] This invention belongs to the field of lawn maintenance technology, and relates to a method for protecting Zoysia japonica during winter in Liaoning Province, and particularly to a method for protecting Zoysia japonica during winter using agricultural solid waste at low cost. Background Technology

[0002] Zoysia matrella, due to its strong drought resistance and suitability for extensive management, coupled with its fine leaves, long green period, and dense turf, is widely used in ornamental lawns, sports field lawns, and open lawns. Zoysia matrella is generally distributed in subtropical and subtropical regions, and is widely used in Guangdong, Guangxi, and the Yangtze River basin in my country. However, it has poor cold resistance, suffering severe frost damage below 0℃ and generally unable to overwinter below -5℃. This limits its widespread application in northern my country. Developing a low-cost overwintering protection technology for Zoysia matrella suitable for northern my country, especially Liaoning Province, could fill the gap in its application in ecological restoration projects in northern my country and provide a basis for its wider application in the region. Summary of the Invention

[0003] To address the aforementioned problems, this invention provides a method that utilizes agricultural solid waste as a winter protection material, combined with appropriate management methods and measures, to ensure that Zoysia japonica successfully overwinters. This method is not only low in cost but also provides long-lasting and stable protection.

[0004] The technical solution adopted in this invention is:

[0005] A protection method suitable for overwintering Zoysia japonica in Liaoning Province includes two parts, and the specific steps are as follows:

[0006] 1) Protection methods before wintering in autumn

[0007] 1.1) Pruning: The first pre-winter pruning begins when the minimum temperature drops to 13-15℃, with a stubble height of 3cm; the second pre-winter pruning begins when the minimum temperature drops to 10-15℃, with a stubble height of 2cm; the third pre-winter pruning begins when the minimum temperature drops to 5-8℃, with a stubble height of 1.5cm.

[0008] 1.2) First layer of covering: Apply raw sawdust immediately after the third trimming, when the minimum temperature drops to 5-8℃;

[0009] 1.3) Watering: Water once immediately after covering with raw sawdust to ensure that the raw sawdust is evenly covered and to prevent it from being blown away by strong winds;

[0010] 1.4) Second layer of covering: When the minimum temperature drops to 3-5℃, cover with a layer of fine sand;

[0011] 1.5) Watering: Water once immediately after the second layer of mulch is applied;

[0012] 1.6) Compacting: Use a 100 kg roller to compact the covering material once;

[0013] 1.7) Third layer of covering: When the minimum temperature drops to 0-2℃, cover the surface of the fine sand layer with a mixture of rice husks and coconut coir;

[0014] 1.8) Watering: Water once immediately after covering to ensure the surface covering is completely wet;

[0015] 1.9) Geotextile covering: The day after watering, cover the surface with geotextile and fix it with "U" shaped iron wire;

[0016] 2) Spring greening treatment methods

[0017] 2.1) Watering for greening: When the lowest temperature reaches 8-10℃ in the following spring, water the surface of the geotextile once to ensure that the surface soil is moist;

[0018] 2.2) Remove the geotextile: Remove the geotextile when the minimum temperature reaches 10-15℃;

[0019] 2.3) Covering with mulch: Immediately after removing the geotextile, cover the lawn surface with agricultural mulch and fix it with "U"-shaped iron wire;

[0020] 2.4) Remove the mulch film: Remove the mulch film when the minimum temperature reaches 13-15℃.

[0021] Preferably, in the above-mentioned protection method suitable for overwintering Zoysia japonica in Liaoning Province, the covering thickness in step 1.2) is 0.8-1cm.

[0022] Preferably, in the above-mentioned protection method suitable for overwintering Zoysia japonica in Liaoning Province, the covering thickness in step 1.4) is 0.5-0.8 cm.

[0023] Preferably, in the above-mentioned method for protecting Zoysia japonica overwintering in Liaoning Province, in step 1.7), the volume ratio of the rice husk and coconut coir mixture is 1:1.

[0024] Preferably, in the above-mentioned protection method for overwintering Zoysia japonica in Liaoning Province, the covering thickness in step 1.7) is 1-1.2 cm.

[0025] Preferably, in the above-mentioned method for protecting Zoysia japonica during winter in Liaoning Province, the thickness of the geotextile in step 1.9) is 0.4 cm.

[0026] The beneficial effects of this invention are:

[0027] 1. Promotes successful overwintering of Zoysia japonica: The solution adopted in this invention provides multiple layers of protection for the stolons and rhizomes of Zoysia japonica in winter, preventing the stolons and rhizomes from drying out due to winter dryness, thereby ensuring that the lawn can successfully overwinter.

[0028] 2. Improve the microenvironment of the lawn surface: By adopting multiple layers of mulch, the microenvironment of the lawn surface is improved, which can not only retain moisture but also keep warm, reducing the impact of frost damage on the stems of Zoysia japonica.

[0029] 3. Low cost: The covering material used in this invention is all agricultural solid waste, which has a low purchase cost and realizes the reuse of waste, so the cost is extremely low.

[0030] 4. High overwintering survival rate: Through more than two years of trials in the Shenyang area, the overwintering survival rate of grass stems reached over 85%. Detailed Implementation

[0031] Example: Protection method for overwintering Zoysia japonica in Shenyang area

[0032] 1) Protection methods before wintering in autumn

[0033] 1.1) Pruning: The first pre-winter pruning begins when the minimum temperature drops to 13-15℃, with a stubble height of 3cm; the second pre-winter pruning begins when the minimum temperature drops to 10-15℃, with a stubble height of 2cm; the third pre-winter pruning begins when the minimum temperature drops to 5-8℃, with a stubble height of 1.5cm. Through these three autumn prunings, the accumulation of nutrients in the stolons and rhizomes of Zoysia japonica before winter is promoted, while also providing convenient conditions for subsequent mulching.

[0034] 1.2) First layer of covering: After the third trimming, when the minimum temperature drops to 5-8℃, immediately cover with raw sawdust, with a covering thickness of 0.8-1cm.

[0035] 1.3) Watering: Water once immediately after covering with raw sawdust to ensure that the raw sawdust is evenly covered and to prevent it from being blown away by strong winds.

[0036] 1.4) Second layer of covering: When the minimum temperature drops to 3-5℃, cover with a layer of fine sand, with a thickness of 0.5-0.8cm.

[0037] 1.5) Watering: Water once immediately after the second layer of covering is applied.

[0038] 1.6) Compacting: Use a 100 kg roller to compact the covering material once.

[0039] 1.7) Third layer of covering: When the minimum temperature drops to 0-2℃, cover the surface of fine sand with a mixture of rice husks and coconut coir in a volume ratio of 1:1, with a covering thickness of 1-1.2cm.

[0040] 1.8) Watering: Water once immediately after covering to ensure the surface covering is completely wet.

[0041] 1.9) Geotextile covering: The day after watering, cover the surface with a geotextile with a thickness of 0.4 cm and fix it with "U" shaped iron wire.

[0042] 2) Spring greening treatment methods

[0043] 2.1) Watering for greening: When the lowest temperature reaches 8-10℃ in the following spring, water the surface of the geotextile once to ensure that the surface soil is moist.

[0044] 2.2) Remove the geotextile: Remove the geotextile when the minimum temperature reaches 10-15℃.

[0045] 2.3) Covering with mulch: Immediately after removing the geotextile, cover the lawn surface with agricultural mulch and fix it with "U"-shaped iron wire.

[0046] 2.4) Remove the mulch film: Remove the mulch film when the minimum temperature reaches 13-15℃.

[0047] Using the method of the present invention described above, through more than two years of trials in the Shenyang area, the overwintering survival rate of Zoysia japonica stems reached over 85%.

Claims

1. A method for protecting Zoysia japonica during winter in Liaoning Province, characterized by comprising the following steps: 1) Protection methods before wintering in autumn 1.1) Pruning: The first pre-winter pruning begins when the minimum temperature drops to 13-15℃, with a stubble height of 3cm; the second pre-winter pruning begins when the minimum temperature drops to 10-15℃, with a stubble height of 2cm; the third pre-winter pruning begins when the minimum temperature drops to 5-8℃, with a stubble height of 1.5cm. 1.2) First layer of covering: Apply raw sawdust immediately after the third trimming, when the minimum temperature drops to 5-8℃; 1.3) Watering: Water once immediately after covering with raw sawdust to ensure that the raw sawdust is evenly covered and to prevent it from being blown away by strong winds; 1.4) Second layer of covering: When the minimum temperature drops to 3-5℃, cover with a layer of fine sand; 1.5) Watering: Water once immediately after the second layer of mulch is applied; 1.6) Compacting: Use a 100 kg roller to compact the covering material once; 1.7) Third layer of covering: When the minimum temperature drops to 0-2℃, cover the surface of the fine sand layer with a mixture of rice husks and coconut coir; 1.8) Watering: Water once immediately after covering to ensure the surface covering is completely wet; 1.9) Geotextile covering: The day after watering, cover the surface with geotextile and fix it with "U" shaped iron wire; 2) Spring greening treatment methods 2.1) Watering for greening: When the lowest temperature reaches 8-10℃ in the following spring, water the surface of the geotextile once to ensure that the surface soil is moist; 2.2) Remove the geotextile: Remove the geotextile when the minimum temperature reaches 10-15℃; 2.3) Covering with mulch: Immediately after removing the geotextile, cover the lawn surface with agricultural mulch and fix it with "U"-shaped iron wire; 2.4) Remove the mulch film: Remove the mulch film when the minimum temperature reaches 13-15℃.

2. The method for protecting *Zoysia japonica* suitable for overwintering in Liaoning Province according to claim 1, characterized in that, In step 1.2), the covering thickness is 0.8-1cm.

3. A method for protecting *Zoysia japonica* overwintering in Liaoning Province according to claim 1, characterized in that, In step 1.4), the covering thickness is 0.5-0.8cm.

4. A method for protecting overwintering Zoysia japonica in Liaoning Province according to claim 1, characterized in that, In step 1.7), the volume ratio of the rice husk and coconut coir mixture is 1:

1.

5. A method for protecting *Zoysia japonica* overwintering in Liaoning Province according to claim 1, characterized in that, In step 1.7), the covering thickness is 1-1.2cm.

6. A method for protecting *Zoysia japonica* overwintering in Liaoning Province according to claim 1, characterized in that, In step 1.9), the thickness of the geotextile is 0.4 cm.