Key points of sowing management of ryegrass

Ryegrass, Latin name: Lolium perenne L., Gramineae, ryegrass, about 10 species, including forage grass and grassland grasses and some poisonous weeds in temperate regions of Eurasia. Ryegrass is an important cultivated forage grass and green manure crop. There are about 10 species of this genus and 7 species in China. Perennial ryegrass (L.perenne) and Italian ryegrass (L.multiflorum) are cultivated grasses with economic value. It is widely cultivated as forage for cattle and sheep in New Zealand, Australia, the United States and the United Kingdom. Excellent forage grasses are widely introduced and cultivated in various places. Born in meadow pastures, roadside wetlands are common. It is widely distributed in Kashmir, Pakistan, Europe, warm temperate zone of Asia and northern Africa. According to the statistics up to 2004, there are more than 20 varieties of ryegrass in the world, and there are two kinds of ryegrass with the highest economic value and the most widely cultivated: perennial ryegrass and Italian ryegrass.

Growth characteristics of ryegrass

Ryegrass developed whisker root, but not deep into the soil, clump, a lot of tillers, seed weight of about 2 grams, ryegrass likes warm and humid soil, the suitable soil pH is 6 Mel 7. When the diurnal temperature is 12 ℃-27 ℃, the grass has strong regeneration ability, strong light, short sunshine and low temperature for tillering, but shading is disadvantageous to the growth of ryegrass. Ryegrass is resistant to moisture, but it is not conducive to the growth of ryegrass when the drainage is poor or the groundwater level is too high. Ryegrass can provide more green fodder in a short time, so it is a good grass resource for livestock and poultry in spring and autumn.

Key points of sowing management of ryegrass

First, select improved varieties.

In order to plant ryegrass, we should choose some excellent varieties, such as "goose Legang" and "Ganxuan No. 1", which have soft texture, strong food attraction, good palatability, wide adaptability and strong regeneration and tillering ability. In addition, high-quality seeds selected by machinery should be selected for sowing in order to make the seedlings strong and strong. Second, sowing seeds at the right time.

Ryegrass has strong regeneration ability, sowing at the right time is not only beneficial to complete and strong seedlings, but also increase the times of cutting to benefit high yield. It is generally better to sow seeds in mid-late September and end sowing in late October at the latest. Should not sow prematurely, because sowing prematurely, the temperature is too high, it is disadvantageous to emergence. Third, the quality of sowing.

Before sowing, the soil should be carefully prepared and sufficient base fertilizer should be applied. Generally, 500ml / mu of mature human feces and urine and 1520kg of nitrogen, phosphorus and potassium three-element compound fertilizer should be used as base fertilizer. When sowing, the soil should not accumulate water, nor should it be too dry, otherwise it will affect germination. If the soil is too dry, the water of the horse should be irrigated to wet the soil before sowing, and the fields with serious stagnant water should be ditched and drained. Single-cropping rice fields or idle fields are generally dominated by strip sowing, with a row spacing of 20cm and a sowing depth of about 2cm. The double-cropping rice fields should be sown 7 / 10 days before harvest. Before sowing, mix the seeds well with river mud before sowing, and then gently hit the rice plant with a small bamboo pole after sowing, so that all the ryegrass seeds scattered on the rice plant enter the ground. It is better to use 1.5 kg of seed per mu, and those with poor seed quality can appropriately increase the amount of seed used to promote the accumulation of seedlings. Fourth, management at the seedling stage.

After emergence, the seedlings should be fertilized once with 400 kilograms of rotten rare human feces and 500 kilograms of urea and 5 kilograms of urea to promote the rapid growth of seedlings. In addition, after each cut, 5 kilograms of urea should be used to apply topdressing. Generally, the height of the seedling can be cut to 40 cm, and it can be cut 5 times in the lifetime, but the seedling should not be cut more than 2 times, otherwise the yield of the seedling will be seriously affected.