夏季是混播草地中无芒雀麦种群衰退的关键时期。
Summer was the pivotal period of awnless brome when it declined in the mixture.
研究了雁门关农牧交错带不同一年生牧草及饲料作物混播草地的产草量。
The yield of the annual forage and feed crops mixture grassland in agro-pastoral transitional zone of Yanmenguan region in Shanxi was studied.
研究了雁门关农牧交错带不同一年生牧草及饲料作物混播草地的产草量。
Effect of the annual forage and feed crops mixture at different rate and sow methods in the Shanxi region of agro-pastoral transitional zone was studied.
在高寒地区，通过建植多年生禾草混播草地来提高草地生产力的生产模式是可行且有效的。
In alpine region, it is feasible and effective to improve the productivity by establishing mixed artificial perennial grassland.
研究了刈割次数、施氮量和混播比例对扁穗牛鞭草和白三叶混播草地产量和群落组成的影响。
The total yields and composition of mixed pasture under different cutting frequency, nitrogen fertilizer and seeding rates were determined.
青藏高原高寒地区，多年生禾草混播草地是提高草地生产力、维护草地生态平衡的集约化牧业用地的最佳选择。
The comparative test of twenty one species of perennial grass introduced into alpine cold pasture showed that in herbage yield and winter hardiness.
本文采用综合特征指标的选择方法，筛选出美国无芒雀麦等三个优良能源草种，并提出建立永续性多年生混播草地模式。
Selected the way of multiple character index, we selected Ameri- can Bromus inermis and other two fine energy-herbs and advanced the model of constructing endurable, perennial and mixed meadow.
提高天然草地饲用植物经济价值的基本途径是施肥、灌溉、补播和混播豆科牧草及采取合理的利用方式。
The basic ways of improvement of natural grassland fodder plant economic value are grassland fertilization, compensatory seed planting and sowed leguminous grass and selected rational utilizable way.
结果表明：1.在高寒地区，通过建植多年生混播禾草人工草地可达到提高草地生产力的目的。
The results indicate: 1. In alpine region, the productivity of the grassland can be improved by establishing mixture grassland of cultivated perennial grasses.
结果表明：1.在高寒地区，通过建植多年生混播禾草人工草地可达到提高草地生产力的目的。
The results indicate: 1. In alpine region, the productivity of the grassland can be improved by establishing mixture grassland of cultivated perennial grasses.
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