1·Walnut tree is bigger, the planting density is low, such as alfalfa, ryegrass, dwarf crops, grass to care, to promote the production of fertilizer.
核桃树体较大，定植密度较低，如紫花苜蓿、黑麦草、矮秆农作物等，以草养地，以肥促产。
2·The turnover of lamina tissue of perennial ryegrass was systematically studied through cutting experiment by the application of the theory and methods of the tissue turnover.
本研究应用组织转化的理论和方法，通过周割试验对多年生黑麦草叶片组织的转化进行较为深入的研究。
3·Pot experiments were performed to study the effect of amending organic matters and surfactants to phenanthrene-contaminated soil on phyto-remediation for soil phenanthrene with ryegrass.
采用盆栽试验方法，研究了外源有机物料及表面活性剂加入菲污染土壤后黑麦草对土壤中菲的修复作用。
4·There was no effect on drying of annual ryegrass by spraying drying agents, but it could elevate in vitro digestibility of grass.
喷化学干燥剂在缩短特高多花黑麦草干燥时间上无效，但在提高其体外消化率上效果显著；
5·Seeing from the whole evaluation period, the average green degree of Kentucky bluegrass is higher than that of tall fescue and perennial ryegrass.
从整个评定时期看，草地早熟禾的平均绿度比高羊茅和多年生黑麦草高。