刈割次数对光叶紫花苕产草量和产种量的观察试验

四川凉山州是一个以牧为主的山区,每年推广种植光叶紫花苕的面积约9.33万hm2,成为该地区解决冬春缺草,提高牧业生产水平的重要措施.为了提高和稳定光叶紫花苕产草和产种性能,我们有针对性开展了光叶紫花苕不同刈割方式对产草量、产种性能的观察试验,得出利用大春冬闲地8月份播种,第一次现蕾期为52天,生育期为251天,第一次刈割期生长80天左右为最好,比60天刈割产量提高80.55-160.0%,追求产种又产草安排冬前刈割2次最好,亩产种量可达42.98kg,只追求产草量安排在冬前和第二年早春各刈割一次平均亩总产草量2491.61kg.

The Effect Observation of the Rate of Shear of Vicia Uillosa Var on Its Grass Production and Seeds Production

We studied the different mode of shear of Vicia uillosa var on its grass production and seeds production to improve and stabilize these two properties. The result reveal that the better shear time is about 80 days to the field not in use in winter after seeds are plant in August and the first bud appears after 52 days with the development period about 251 days. The production improve 80.55% to 160.0% compared to the shear time of 60 days. The best shear time is before winter for two times intend for high grass production and seed production, the seeds production can reach 42.98kg per unit of area. If the high grass production is the only goal, the shear time is before winter and the early spring next year for one time each, the grass production can reach 2491.61kg per unit of area.