Cutting was not beneficial to tiller, all cutting treatments did not exist compensatory growth effect of tiller.
刈割不利于多年生黑麦草的分蘖，所有刈割处理均不存在分蘖的“超补偿生长”效应；The turf could be formed with bermuda grass, tall fescue and perennial ryegrass when the cement content was low.
在用低量水泥作为粘接材料基质种植狗牙根、高羊茅和多年生黑麦草时，能基本成坪。The chromosome karyotypes and the chromosome variation of regenerated plants of perennial ryegrass(Lolium perenne L. )were studied.
对多年生黑麦草核型及组织培养再生植株细胞染色体变异进行了观察研究。Studies on the Tissue Culture and PlantRegeneration of Perennial Ryegrass.
多年生黑麦草组培再生体系的研究。The results are as follows: 1. Establishment of plant regeneration system of perennial ryegrass.
研究内容与结果如下：1、多年生黑麦草的再生体系建立。Ammonia volatilization was estimated in the field from perennial ryegrass turf after application of five kinds of N-fertilizer.
在多年生黑麦草草坪施用速效与缓效氮肥后，对氨的挥发损失进行田间定位测定。The Relationship of Mineral Nitrogen Leaching in Perennial Ryegrass Land with Its Runoff Loss
多年生黑麦草草地矿质氮淋溶与径流流失的关系Influence of harvesting time of perennial ryegrass on germination and vigor of seed
多年生黑麦草收获时间对种子发芽特性及其活力的影响Study on community photosynthetic and other ecological physiology characteristics of white clover, perennial ryegrass and orchardgrass
白三叶、多年生黑麦草和鸭茅光合生理生态特性研究