In recent years, the new technology of orchard mulching has been greatly promoted, and the yield and quality of fruit trees in the mulching orchards have greatly improved. In particular, the snow-and-moss series rat grass that was planted in some orchards in Laiyang and surrounding cities played a role in suppressing the growth of weeds, maintaining soil looseness, aeration, drought resistance, and aphid resistance. After the rat grass roots and vegetation decayed and rotted, soil organic matter was increased, soil structure was improved, and fertility was improved. Snow-printed series rat grass is a grass that has been introduced from Japan. It is a fine grass species of the orchard. Growth habits of rat grasses The roots of rat grass have a depth of up to 30 cm and a depth of up to 60 cm. Due to the dense roots in the soil, after the growth period and the roots rot and rot, both the soil permeability is maintained and the water in the ground area is prevented; the ventilation is also maintained, and the resistance capacity of the fruit trees is enhanced. In the upper part of the rat grass, there are clusters of linear needles that grow, and the natural lodging grows. The needles are as long as 60-70 cm. In the growing season, the growth of the needles is similar to the horse's pony tail, woven in the ground to 20 to 30 cm thick, wave-like green onion "sea of â€‹â€‹clouds", long-term coverage of the ground, both to prevent evaporation of soil moisture, but also to avoid the ground sun exposure, enhance fruit trees Drought resistance. Rat grass is a kind of herb that is resistant to cold and high temperature. Sowing in June and July did not germinate due to high temperatures. In August, planting sprouted, but died due to high temperatures. Sowing before and after National Day is more appropriate. Seedlings, like young wheat, pass through the winter, and are prosperous for the March-May season in the following year. During the middle and late June (wheat maturation period), they will die together with the roots (the seeds that are scattered will sprout after the fall). The thickness of the dried grass will be about 7 cm. Into the rainy season, after the erosion of rainwater and people's stampede, the thickness gradually decomposes and becomes thinner. The ground forms a grass blanket woven with needles and leaves, which is not easy to light, and it is not necessary to worry about the fire. Autumn basal fertilization or turning orchard into soil can increase soil organic matter and activate microbial activity. Orchard planting rats thatch can inhibit the growth of all kinds of weeds, and maintain good ventilation of the soil, within a year can reduce 5 to 6 times the cost of grass, looms labor. Sowing should pay attention to several issues sowing time, the most suitable from late September to mid-October, sowing in late October can still emerge, but the grass seedlings difficult winter. The sowing temperature in March of the following year is more appropriate, but it shortens the growth period and requires more fertilizer and water. Before weeding, weeds should be removed. After leveling the ground, 1.5~2 kg of seed per acre should be sowed. The cover soil should be thin, and the repression should be light (it can be pulled once again); 3~4 months before the fruit trees are watered, every acre Sprinkle about 30 kilograms of urea.
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