Agricultural mulch refers to a thin agricultural film that is directly covered with a cultivated hoe or near the ground. The general thickness is 0.008 to 0.015 mm and the base resin is polyethylene. In recent years, a variety of colored agricultural films have come onto the market. Due to the different absorption and reflection laws of different colors of agricultural films, the effects on crop growth, weeds, diseases and insect pests, and ground temperature are not the same. Modern mulch has developed from ordinary mulch to various colored plastic mulch and weeding, insect control and other multi-purpose special mulch. Therefore, in the use, different colors of agricultural film should be selected according to the characteristics of different crops and the growing season.
1, ordinary film: thickness of 0.015 mm, width ranging from 80 to 300 cm, depending on the width of the choice of different specifications. After the plastic film is covered, it can increase the temperature, protect the earth, protect the roots, and increase the fertilizer efficiency. There is also a certain reflective effect to improve the light conditions of the lower leaves of the plant. Suitable for use in spring and autumn.
2, black agricultural film: thickness ranging from 0.015 to 0.02 mm. The low light transmittance can effectively prevent the evaporation of water in the soil and inhibit the growth of weeds. However, the temperature increase is slower than that of transparent membranes. Ground cover can significantly reduce ground temperature, inhibit weeds, and maintain soil moisture. It is mainly suitable for weedy clumps and vegetables cultivated in high temperature season (summer radish, cabbage, spinach, autumn cucumber, late tomato) and orchards. It is particularly suitable for high temperature cultivation in summer and autumn and can create a good growth for crop roots. Development environment, increase production. At present, strawberry cultivation in greenhouses has been widely used to cover black mulch. This not only has the effect of promoting strawberry seedlings and growth, but also makes strawberry fruit not touch the soil and improves product quality.
3, silver gray film: thickness of 0.008 to 0.015 mm, width of 70 to 200 cm. The light transmittance is about 60%, and it can reflect ultraviolet rays. The ground covers cooling, moisturizing, and repelling locusts. It can increase the reflected light on the ground and help to color the fruit. It can repel vegetables, melons and fruit locusts and whitefly, reduce disease, maintain water and soil and weeding functions. It is suitable for pest control and heat-resistant cultivation of vegetables, melons and tobacco in summer and autumn. Practice has proved that summer and autumn are used to cover crops such as cucumbers, watermelons, tomatoes, spinach, celery, lettuce and cotton, which not only provide good pest control but also improve the quality of these crops.
4, black and white two-sided plastic film: This is the positive and negative black and white two different colors of plastic film. When the ground is covered, the black side is usually face down and the white side is facing upwards. It not only has the effect of black plastic film coverage, but also has the effect of white film surface reflection. It is suitable for ground cover cultivation of greenhouse vegetables in autumn and winter, especially for eggplant vegetables, the best cultivation effect. Thickness 0.02mm, higher cost price.
5. Blue agricultural film: The transmittance is higher than that of white agricultural film under weak light conditions, but the light transmittance is lower than that of white agricultural film under strong light conditions, and the heat preservation performance is good. It is suitable for raising seedlings and raising seedlings. It not only has a high seedling rate, but also has thick seedlings. It can inhibit the growth of black spot pathogens of cruciferous vegetables and has obvious effect of increasing production and quality. It is very suitable for rice breeding and can also be used for the cultivation of vegetables, cotton, peanuts, strawberries, potatoes and other crops.
6, green agricultural film: Can make the increase of green light, so that the growth of weeds is controlled, better control of weeds, increase production. It is commonly used for the cultivation of vegetables, eggplants, sweet peppers, melons, strawberries, and other cash crops.
7. Red agricultural film: It can transmit red light and at the same time can block the transmission of other shades that are not conducive to crop growth. Therefore, the need for red light such as rice, corn, and sugar beet can be satisfied, and the crop can grow vigorously. It is mainly suitable for rice, beet, amaranth, cucumber and other crop coverage. Many years of practice have proved that the rice seedlings cultivated under the red agricultural film grow vigorously; the sugar content of the sugar beet increases; the leaves of the Chinese chive are thick and fleshy, the harvesting period is advanced, and the yield is increased; the carrot can increase the yield.
8, in addition to the grass film: add a certain amount of herbicide, which play a role in killing weeds. Because herbicides have strict selectivity to crops, if they are used wrongly, they will cause phytotoxicity to the crops. Therefore, special mulch film should be selected according to the type of crops, and should not be used blindly so as to avoid loss of production. Generally suitable for use in lots of weeds.
1, ordinary film: thickness of 0.015 mm, width ranging from 80 to 300 cm, depending on the width of the choice of different specifications. After the plastic film is covered, it can increase the temperature, protect the earth, protect the roots, and increase the fertilizer efficiency. There is also a certain reflective effect to improve the light conditions of the lower leaves of the plant. Suitable for use in spring and autumn.
2, black agricultural film: thickness ranging from 0.015 to 0.02 mm. The low light transmittance can effectively prevent the evaporation of water in the soil and inhibit the growth of weeds. However, the temperature increase is slower than that of transparent membranes. Ground cover can significantly reduce ground temperature, inhibit weeds, and maintain soil moisture. It is mainly suitable for weedy clumps and vegetables cultivated in high temperature season (summer radish, cabbage, spinach, autumn cucumber, late tomato) and orchards. It is particularly suitable for high temperature cultivation in summer and autumn and can create a good growth for crop roots. Development environment, increase production. At present, strawberry cultivation in greenhouses has been widely used to cover black mulch. This not only has the effect of promoting strawberry seedlings and growth, but also makes strawberry fruit not touch the soil and improves product quality.
3, silver gray film: thickness of 0.008 to 0.015 mm, width of 70 to 200 cm. The light transmittance is about 60%, and it can reflect ultraviolet rays. The ground covers cooling, moisturizing, and repelling locusts. It can increase the reflected light on the ground and help to color the fruit. It can repel vegetables, melons and fruit locusts and whitefly, reduce disease, maintain water and soil and weeding functions. It is suitable for pest control and heat-resistant cultivation of vegetables, melons and tobacco in summer and autumn. Practice has proved that summer and autumn are used to cover crops such as cucumbers, watermelons, tomatoes, spinach, celery, lettuce and cotton, which not only provide good pest control but also improve the quality of these crops.
4, black and white two-sided plastic film: This is the positive and negative black and white two different colors of plastic film. When the ground is covered, the black side is usually face down and the white side is facing upwards. It not only has the effect of black plastic film coverage, but also has the effect of white film surface reflection. It is suitable for ground cover cultivation of greenhouse vegetables in autumn and winter, especially for eggplant vegetables, the best cultivation effect. Thickness 0.02mm, higher cost price.
5. Blue agricultural film: The transmittance is higher than that of white agricultural film under weak light conditions, but the light transmittance is lower than that of white agricultural film under strong light conditions, and the heat preservation performance is good. It is suitable for raising seedlings and raising seedlings. It not only has a high seedling rate, but also has thick seedlings. It can inhibit the growth of black spot pathogens of cruciferous vegetables and has obvious effect of increasing production and quality. It is very suitable for rice breeding and can also be used for the cultivation of vegetables, cotton, peanuts, strawberries, potatoes and other crops.
6, green agricultural film: Can make the increase of green light, so that the growth of weeds is controlled, better control of weeds, increase production. It is commonly used for the cultivation of vegetables, eggplants, sweet peppers, melons, strawberries, and other cash crops.
7. Red agricultural film: It can transmit red light and at the same time can block the transmission of other shades that are not conducive to crop growth. Therefore, the need for red light such as rice, corn, and sugar beet can be satisfied, and the crop can grow vigorously. It is mainly suitable for rice, beet, amaranth, cucumber and other crop coverage. Many years of practice have proved that the rice seedlings cultivated under the red agricultural film grow vigorously; the sugar content of the sugar beet increases; the leaves of the Chinese chive are thick and fleshy, the harvesting period is advanced, and the yield is increased; the carrot can increase the yield.
8, in addition to the grass film: add a certain amount of herbicide, which play a role in killing weeds. Because herbicides have strict selectivity to crops, if they are used wrongly, they will cause phytotoxicity to the crops. Therefore, special mulch film should be selected according to the type of crops, and should not be used blindly so as to avoid loss of production. Generally suitable for use in lots of weeds.
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