Method for improving aridity of ryegrass by using rare earth lanthanum

Abstract

The invention relates to a method for aridity of ryegrass by using rare earth lanthanum and particularly relates to application to increasing activity of protective enzyme of ryegrass and stress resistance of ryegrass by using the rare earth lanthanum. The method comprises the following steps of: sowing seeds of ryegrass on garden soil subjected to lawn establishment, wherein every 100-200g of garden soil contains 200mg / Kg-800mg / Kg of lanthanum nitrate; and at the initial stage of sowing, performing watering thoroughly so as to guarantee the smooth germination of the seeds and the initial-stage growth of young seedlings. When certain amount of rare earth is used, the activity of the protective enzyme of the ryegrass is remarkably increased, the defense capability of a protective enzyme system is strengthened, so that the drought resistance of the lawn plants is improved; in addition, the application of the technology is hopeful for the realization of the efficient and low-cost operation mode for the large-area city lawn establishment.

Description

technical field

[0001] The invention relates to the application of rare earth lanthanum in the technical field of urban lawn construction, in particular to a method for improving the aridity of ryegrass by using lanthanum nitrate. The application of this technology can improve the initial growth potential of lawns, enhance the competitiveness of lawn plants and weeds, and improve the drought resistance of lawn plants. Background technique

[0002] As an ecosystem, lawn is a huge carbon source storehouse, and grassland soil in the world can absorb and deposit 0.01-0.3Gt of carbon every year. thus reducing CO in the air 2 to reduce the greenhouse effect to a certain extent. Secondly, the dense surface covering layer and grass root layer formed by the turf have a good effect on preventing soil erosion; the turf can also reduce the daily temperature difference on the surface, so it can effectively reduce the soil collapse caused by "frost heave". The lawn has a huge ability t...

Examples

Embodiment 1

[0076] (1) Sow ryegrass seeds on the garden soil for lawn construction. 140g of garden soil contains 500 mg / Kg of lanthanum nitrate, and the sowing density is 35.0g / m 2 , In the initial stage of sowing, adequate watering is required to ensure the smooth germination of seeds and the initial growth of seedlings;

[0077] (2) After three weeks, water should be given quantitatively according to the degree of stress, and then weighed and watered every two days to maintain within the range of stress. 70% (weight) field maximum water holding capacity, medium is 55% (weight), heavy is 40% (weight);

[0078] (3) The culture conditions are as follows: at a humidity of 68%, light during the day, a temperature of 22°C, and a temperature of 18°C ​​at night, culture for 40 days, and a light intensity of 800 μmol m -2 the s -1 ;

[0079] (4) During the establishment of lawn plants, follow the management requirements of ordinary lawn plants; when the ryegrass grows to 40 days, cut the leav...

Embodiment 2

[0081](1) Sow ryegrass seeds on the garden soil for lawn construction, 180g contains 300 mg / Kg of lanthanum nitrate, and the sowing density is 45.0g / m3. At the initial stage of sowing, water fully to ensure smooth germination of seeds and early growth of seedlings ;

[0082] (2) After three weeks, water should be given quantitatively according to the degree of stress, and then weighed and watered every two days to maintain within the range of stress. 80% (weight) of the maximum field water holding capacity, 55% (weight) for moderate stress, and 35% (weight) for severe stress;

[0083] (3) The culture conditions are as follows: at a humidity of 78%, light during the day, a temperature of 22°C, and a temperature of 22°C at night, culture for 60 days, and a light intensity of 900 μmol m -2 the s -1 ;

[0084] (4) During the establishment of lawn plants, follow the management requirements of ordinary lawn plants; when the ryegrass grows to 50 days, cut the leaves for measuremen...

technical field

[0001] The invention relates to the application of rare earth lanthanum in the technical field of urban lawn construction, in particular to a method for improving the aridity of ryegrass by using lanthanum nitrate. The application of this technology can improve the initial growth potential of lawns, enhance the competitiveness of lawn plants and weeds, and improve the drought resistance of lawn plants. Background technique

[0002] As an ecosystem, lawn is a huge carbon source storehouse, and grassland soil in the world can absorb and deposit 0.01-0.3Gt of carbon every year. thus reducing CO in the air 2 to reduce the greenhouse effect to a certain extent. Secondly, the dense surface covering layer and grass root layer formed by the turf have a good effect on preventing soil erosion; the turf can also reduce the daily temperature difference on the surface, so it can effectively reduce the soil collapse caused by "frost heave". The lawn has a huge ability t...

Examples

Embodiment 1

[0076] (1) Sow ryegrass seeds on the garden soil for lawn construction. 140g of garden soil contains 500 mg / Kg of lanthanum nitrate, and the sowing density is 35.0g / m 2 , In the initial stage of sowing, adequate watering is required to ensure the smooth germination of seeds and the initial growth of seedlings;

[0077] (2) After three weeks, water should be given quantitatively according to the degree of stress, and then weighed and watered every two days to maintain within the range of stress. 70% (weight) field maximum water holding capacity, medium is 55% (weight), heavy is 40% (weight);

[0078] (3) The culture conditions are as follows: at a humidity of 68%, light during the day, a temperature of 22°C, and a temperature of 18°C ​​at night, culture for 40 days, and a light intensity of 800 μmol m -2 the s -1 ;

[0079] (4) During the establishment of lawn plants, follow the management requirements of ordinary lawn plants; when the ryegrass grows to 40 days, cut the leav...

Embodiment 2

[0081](1) Sow ryegrass seeds on the garden soil for lawn construction, 180g contains 300 mg / Kg of lanthanum nitrate, and the sowing density is 45.0g / m3. At the initial stage of sowing, water fully to ensure smooth germination of seeds and early growth of seedlings ;

[0082] (2) After three weeks, water should be given quantitatively according to the degree of stress, and then weighed and watered every two days to maintain within the range of stress. 80% (weight) of the maximum field water holding capacity, 55% (weight) for moderate stress, and 35% (weight) for severe stress;

[0083] (3) The culture conditions are as follows: at a humidity of 78%, light during the day, a temperature of 22°C, and a temperature of 22°C at night, culture for 60 days, and a light intensity of 900 μmol m -2 the s -1 ;

[0084] (4) During the establishment of lawn plants, follow the management requirements of ordinary lawn plants; when the ryegrass grows to 50 days, cut the leaves for measuremen...

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