Bermudagrass (bermudagrass)

A species of the genus Bermudagrass of the family Gramineae, scientific name Cynodondaclylon (L.) Pars., perennial herbs. Also known as tripping root grass, Xing Yizhi. For excellent forage grass, turfgrass and soil and water conservation crops. It is distributed in warm areas all over the world, and China is distributed to the south of the Yellow River basin.

Fibrous roots are thin and tough; rhizomatous or stoloniferous, internodes vary in length, the stem is more than 1m long on the ground and takes root and branches on the nodes, and the erect part is 10-30cm high; leaves are short, linear, 1.5-3cm long and 1.5-3mm wide; spikes, 2-5cm long, 3-6 fingers arranged at the top of the stem; spikelets arranged on one side of the rachilla, 2-2.5mm long, containing a floret The caryopsis is oval, about 1mm long, and the 1000-grain weight is about 0.13g.

Like warm climate and slightly humid soil. The growth is the best in the area where the daily average temperature is above 24 ℃. It is resistant to drought and waterlogging for a long time. Both acidic soil and alkaline soil grow well, while fertile soil with low temperature and good drainage grows best. Nitrogen fertilizer should be applied to barren soil. The sowing time should be in spring, and the seeds can be directly seeded. The sowing rate is 5.3-7.5kg per hectare. Sow, rake lightly after sowing, keep proper moisture, and seedlings can emerge. Turf can also be used for transplantation, and the transplantation period is suitable for spring and summer. Dig up the Bermudagrass turf about 3cm. Cut into long strips or squares 20-30cm wide, lay on the leveled ground, lay a piece of turf every 1m, then step tight and irrigate, it is easy to survive.

Because of the well-developed rhizome and stolon, the plant is short, so it is most suitable for laying turf in streets, stadiums and dams. Fresh grass contains 25.3% dry matter, 14.62% crude protein, 2.37% crude fat, 29.25% crude fiber, 40.32% nitrogen-free extract and 13.44% ash.

Furrow sowing method (furrow-sowingofmillet)

The planting method of sowing grain seeds in pre-opened shallow ditches, also known as choked valleys or trench valleys, evolved from the ancient "paddy fields". It is a kind of cultivation technique of lodging prevention and drought resistance. It can be used in the areas with deep soil layer, high fertility and irrigation conditions in North and Northwest China. It is also often used as an effective method to resist drought and protect seedlings in arid and semi-arid areas.

The main technical points are "planting disease-resistant varieties, ditching and sowing, centralized fertilization, wide and dense planting, leveling ditches by stages, and cultivating soil into ridges". Make millet "planted in ditches and grow on ridges". Before sowing, the seeds were selected with salt water, rinsed with clean water and dried, and the seeds were treated with chemicals.

Open ditches and sow seeds and apply fertilizer centrally. After the land is leveled, the ditch is opened first, the distance between the ditch is 40cm, and the ditch depth is 15cm. Concentrated fertilization was applied in the ditch, and after the dung and soil were mixed evenly, the ditch bottom was leveled. Sowing amount of 7.5kg per hectare, covering soil 3-4cm after sowing, suppressing 1-5 times. Large area planting ditch sowing valley, can use hanging gully seeder. Towed by a 12-horsepower small tractor, sowing two grooves at a time, the distance between grooves can be adjusted. Ditching, fertilization, sowing, soil mulching and suppression are completed at one time. You can sow 0.3ha every hour.

Wide and close planting, on the basis of seedling protection, wide seedling retention, increase density. After the seedlings were unearthed, the first true leaf was suppressed once; after 2-3 leaves, dimethoate was sprayed to control insects; 3-4 leaves fixed seedlings, wide angle-adjusted seedlings, leaving 90-1.2 million basic seedlings per hectare to make millet seedlings grow in the ditch.

Flatten the ditch by stages and cultivate the soil into ridges. When the seedling height is 16-17cm, the ditch is applied with organic fertilizer, and the ditch is filled with the soil on the ridge twice. When the seedling height was 50-65cm, nitrogen fertilizer was applied and the soil was ridged to the rhizosphere twice to make the plant grow on the ridge.

The scientific principle of increasing production of furrow sowing grain is to strengthen the root and prevent toppling. The second is to relax the line spacing, wide and close planting. On the basis of centralized fertilization and increased fertilizer application, due to the wide sowing range, although the population was increased, the plant distribution was uniform, and the development of individual and population was more coordinated, and the plant growth was neat and consistent. The coefficients of variation of plant height, ear length and stem diameter were relatively lower than those of flat sowing grain. Therefore, the light energy utilization rate of the population is higher.