Sugar cane mulching has significant effects on heat preservation, moisture retention and fertilizer retention, which can effectively increase the emergence rate of sugarcane, increase sugar cane yield, and increase cane sugar content.
(1) Increase soil temperature. After the plastic film is covered, a small circulatory system between the soil and the film is formed, and the ground temperature can be increased by 3~5°C comparable to the exposed land.
(2) Moisturizing and moisturizing. After the plastic film is covered, the temperature of sunlight is high during the day and the temperature difference between the inside and outside of the film is large at night. The film is covered with water droplets. Because of the barrier of the plastic film, the heat exchange between the soil and the air is blocked, and the soil moisture is not easily evaporated.
(3) Improve soil physical properties and increase available nutrients in soil. After the mulching of the mulch, due to the coordination of temperature, moisture, and air in the soil, the softness of the soil is maintained for a longer period of time, which is beneficial to the movement of microorganisms in the soil, accelerates the decomposition of organic matter in the soil, and increases the soil fertility. The demand for nutrients from sugar cane.
However, mulching has increased the cost and formed white pollution, which should be adopted according to local conditions.
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