This invention discloses a rapid establishment and high-frequency harvesting method for alfalfa cultivation on desert edges without the need for windbreaks, belonging to the field of sandy land
ecological agriculture and
forage cultivation technology. This method is suitable for shifting sandy areas on desert edges, eliminating the need for windbreaks. Early-maturing
forage oats are sown in single rows in spring. After the oats reach a height of 10-20cm and form a
windbreak barrier, drought- and salt-tolerant alfalfa is sown in rows between the rows. Drip or sprinkler
irrigation is used, and
nitrogen,
phosphorus, and
potassium fertilizers are reduced by 20%-30% compared to conventional methods. Three to five days after each alfalfa harvest, a
nutrient solution containing enzymatically hydrolyzed animal-derived
small molecule peptides with a molecular weight <1000Da is applied with
irrigation water. The oats are harvested in one go after maturity; the alfalfa is harvested frequently when the plants reach a height of 50-60cm, with 5-6 harvests per year. This invention utilizes oats for temporary wind protection, resulting in a lower than 15%
mortality rate from wind and sand during the alfalfa
seedling stage, enabling planting in the same year. The
hay has a crude
protein content of 19%–22%, a yield of over 1200 kg of
hay per mu, and can be harvested continuously for 8–10 years. It is suitable for desert edge areas with annual
precipitation <100 mm.