As a new type of high-quality and high-yielding pasture, Mexican corn has good palatability and is very popular among farmers. Mexican corn has the advantages of high yield, strong resistance, wide adaptability, strong lobulation force and regenerative capacity, high nutritional value, good palatability and wide application. First, distribution and characteristics Mexican corn is an annual plant of the genus Gramineae, also known as yarrow and Mexican forage corn. The plant is shaped like corn and has many leaves. It originated in Mexico and Argentina. It was introduced from Japan in 1979 and is now cultivated in Guangdong, Guangxi, Zhejiang, Zhejiang and Anhui. Mexican corn is warm, wet, and resistant to fertilizer. The minimum temperature for seed germination is 15 ° C, and the optimum temperature is 24 to 26 ° C. The optimum temperature for growth is 25~35 °C. Heat resistant and resistant to continuous high temperatures of 40 °C. Not resistant to low temperature frost, the temperature drops below 10 °C, growth is stagnant, and death occurs at -1 to 0 °C. The annual rainfall is more than 800mm, and the area with no frost period of more than 200 days can be planted. The soil requirements are not strict, adapt to the slightly acidic or slightly alkaline soil with a pH of 5.5~8. Impatient, immersed in a few days can cause death. Second, the morphological characteristics Mexican corn roots are developed, the stems are thick, 1.5~2cm in diameter, erect, clustered, about 3~4m high, the leaves are lanceolate, the leaves are smooth, and the midrib is obvious. Flowers unisexual, monoecious, male and female, male flowers terminal, panicles, many branches; female flowers are spikes, female ears are numerous and small, from the locusts 5~8 knots above the ground, each section has 1 ear There are about 7 plants per plant, 4 to 8 knots per ear, and there is a small flower per spikelet. After pollination, it develops into caryopsis, and 4 to 8 caryopsis are arranged in a beaded shape. Third, choose a good species Mexican corn grass excellent 12 is not only suitable for plots with good fertilizer and water conditions, but also can be successfully cultivated on poor soil. Mexican corn grass excellent 12 enjoys a warm and humid climate and can withstand a high temperature of 40 ° C. Its stems and leaves are sweet, crisp and juicy, and the palatability is excellent. The fresh grass contains 19.3% crude protein, which is needed by many livestock. Trace elements, cattle, sheep, pigs, rabbits, geese, etc. all like food, high digestibility, 50 acres of fresh grass can feed sheep, 500 geese, etc., the economic benefits are extremely impressive, is China's first acres of production exceeded 30,000 Kilograms, pastures with comprehensive economic benefits exceeding 20,000 yuan. It is foreseeable that in the next few years, Mexican corn grass excellent 12 will definitely develop into a dominant species in the pasture industry, which will play a supporting role for China's “grass raising livestockâ€. Fourth, rotation Mexican corn is not strict with the previous crops, and should be planted after crops such as wheat, legumes and leafy vegetables. It is a good middle crop, with low soil fertility and less weeds, so it can be used as a good predecessor for a variety of crops such as wheat, beans, and roots. V. Land preparation Mexican corn roots are deep into the soil, requiring deep ploughing, and deep ploughing can create loose arable soil, which is conducive to increasing production. In the depth of the tillage layer, the greater the depth of the general tillage, the greater the increase in yield. The depth of ploughing should not be less than 22cm, more preferably 40cm or more. 6. Sowing and cultivation techniques Mexican corn is highly adaptable, heat and drought resistant, and salt and alkali resistant. The whole growth period is 200~260 days, and the appropriate sowing time can be selected according to the growth period and local climate characteristics. Spring is suitable for early sowing, Panzhihua spring sowing should be in the late March to early April, in the previously flattened land, made 1.5m wide sputum, and apply enough base fertilizer to repair the drainage ditch. The seeding rate per acre is 1.5~2kg, and the seeds are soaked in warm water of 30°C for 24 hours before sowing. According to the plant line 40cm × 60cm, using seeding or seedling transplanting. When planting, just cover the fine soil. After sowing, the surface should be kept moist. The seedlings grow slowly within 30~50 days, so we must pay attention to weeding. When the seedling height is 40~60cm, the soil is cultivated by cultivating, the nitrogen fertilizer is applied, and the water is watered during drought. The hole spacing of the hole sowing is 50cm×50cm, and the seeding amount of each hole is 2~3, and the sowing depth is 2cm. The seedling stage grows slowly, pay attention to the cultivating and weeding, and the growth of tillering to jointing stage is accelerated. The nitrogen fertilizer is applied 5~10kg per acre. When the plant is as high as 100cm, it can be castrated, and the stubble height is 10cm. After the castration, the quick-acting nitrogen fertilizer is applied to promote the growth of the regenerated grass. Seven, field management Weeding should be carried out once in the seedling stage or in the early stage of transplanting and keep the soil moist. For each harvest, you can combine irrigation and weeding loose soil on the same day or the next day. Apply 5kg of urea per acre. If it is attacked by aphids or red spiders during growth, it can be sprayed with 40% dimethoate emulsion. . It must be noted that after spraying pesticides, it takes at least 10 days to castrate, so as to avoid organophosphate poisoning after eating. The grass damage is mainly in the early stage, and it should be removed by hand. Try not to use or use herbicides as much as possible. In the event of pests and diseases, if the level of economic harm is not reached, no drug control can be used; if it is necessary to use drugs for prevention and control, animal or plant pesticides that are harmless or less harmful should be used, and the number of uses should be reduced as much as possible. Eight, harvest Mexican corn grass is 3m tall and has abundant stems and leaves. 30 days after sowing, it enters the rapid growth period, and each plant can be divided into more than 20 plants, and many can reach 60 to 70 plants. Harvesting starts 45 days after planting when the plant height is 50 cm or more, and should be kept at 5 cm for quick growth. After that, it can be cut every 20 days, and the whole growth period can be cut 8~10 times. If properly managed, more than 30 000 kg of green forage can be produced per mu. Acne Pimple Patch,Diy Pimple Patch,Pimple Band Aid,Peace Out Acne Dots Wenzhou Celecare Medical Instruments Co.,Ltd , https://www.celecaremed.com
