天然羊草草地在放牧和刈割条件下的种子生产性能

天然羊草草地是优良的放牧场和割草场。本文报告了东北天然单优种羊草草甸,在放牧、割草、休闲等不同利用方式下,羊草的分蘖成穗、生殖器官的性状、产量和质量等种子生产性能。放牧破坏一些个体的成穗过程,单位面积上成穗少,籽粒的净生产量低,但籽粒饱满,品质优良。割草能引起土壤贫瘠化和密度增大,割草的时间越长,对种子生产的影响越严重。休闲能恢复羊草种群种子生产的潜在性能。

The Performances of Seed Production on Natural Aneurolepidium chinense Grassland During Grazing and Cutting

Natural Aneurolepidium chinense grassland is fine grazing land and cutting lead. The performances of seed Production of A. chinense population on natural consociation A. chinense meadow in the northeastern region of China with different use ways, such as grazing, cutting and resting, such as tiller earing petcentage, sexual organic characters, grain yield and the quality, and others are reported in this papers. Grazing can destroy the earing process of some individuals, decrease the number of earing stems in unit area and lower net yield of the grain. The fruit-setting grains were tulland their qualitg was very good on ghe frazing plot. Cutting can set off a chain reaction such as the soil becomes poor and the grass density is increased. The longer time year after year cutting the more seriously the seed production was influenced. Resting can recover the potential qualities of the seed production of the population.