This invention relates to the field of agricultural planting technology, specifically a method for improving perennial cool-season grasslands through differentiated mixed
sowing and fertilization of annual
forage grasses in multiple seasons, comprising the following steps: S1,
grassland selection; S2,
sowing and mowing times: three
sowing times are set, namely May, August, and November of each year; S3, sowing ratio and sowing amount: sowing amount: the differentiated combination sowing amount is determined according to the degree of degradation of perennial grass grasslands and the season, and the sowing amount in May and August is: rye / oats 60-65 kg / hm. ‑2 Variegated purple vetch / arrow-leaved pea 45-50 kg / hm ‑2 The sowing rate in November is 45-50 kg / hm² for rye / oats. ‑2 40-45 kg / hm of *
Vigna angularis* var. *gloriosa*. ‑2
Sowing time: In May and August, sowing is generally done after an effective rainfall when the soil
moisture is suitable. Break the sod and sow shallowly for 1-2 cm. In November, sowing is done before rainfall, with a sowing depth of 2-3 cm. S4. Fertilization.