Practice has proved that orchard grass has the following various benefits and should be vigorously promoted.
Prevent soil erosion. For sloping land and sandy orchards, grass root vegetation can be used to increase soil-fixing capacity, which can effectively prevent and reduce soil erosion and nutrient loss.
Improve soil organic matter. Compared with the clear-growing orchard, the organic matter content of the grass orchard increased year by year, and the longer the planting time, the higher the organic matter content.
Adjust the soil temperature. Warming winter, warming in early spring, and cooling in summer can provide a comfortable environment for root growth.
Adjust soil moisture. Orchard grass can increase the water use efficiency of fruit trees, increase the soil water volume during the dry season, and use the grass to absorb excess water during the rainy season, effectively maintaining the water demand in the fruit growing season.
Improve the utilization of nutrients in the soil. The elements such as nitrogen, phosphorus and potassium in the soil are transformed by the absorption of grass, which can provide convenient conditions for the roots of the orchard.
Increase the number of natural enemies of pests and change the microclimate of the orchard. Orchard grass can use natural enemies to prevent pests, reduce the number of medications, and reduce pesticide residues.
There are many kinds of choices for the choice of grass species. Here are two recommended for everyone:
Old rapeseed. The root system is developed, the stems are thick, and the water storage capacity is large. The stems and leaves after cutting are particularly prone to decay and ripening. It is a good organic fertilizer, and the underground rhizome will quickly mature in a month, forming a space at the root system, and absorbing water in rainy days. Let the roots develop in depth. It can be planted in May and September each year, with 0.25 kg of seeds per mu. When the rapeseed grows to a height of 30cm, it is castrated in time when it is bolted, condensed, and flowers are not opened.
White clover. Leguminous perennial herb, resistant to stamping. Strong regenerative capacity, short main root, developed lateral roots, root rhizobium, strong nitrogen fixation capacity, can effectively inhibit weed growth after Chengping, can be planted every spring and autumn, 0.5 to 1 kg per mu, should be shallow, every year According to the growth of the grass, the castration is 2~4 times, and the cut is left at 3~6 cm. The cut grass is covered under the tree plate. After 4 years, the autumn tillage is used to deepen the fat.
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