1) topping stage
打顶时期
1.
Effects of plant density and topping stage on the yield and quality of flue-cured tobacco variety Yunyan 85;
种植密度、打顶时期对云烟85烟叶产量及质量的影响
2) topping period
打顶期
1.
Study of the best topping period of new variety Yanshai 6 of Sun-cured Tobacco;
晒红烟新品种延晒六号的最佳打顶期研究
3) top-cutting by stages
分期打顶
4) tip cut date
打顶时序
1.
) in North Xinjiang as the object,the niche-fitness values regulated by density and tip cut date was studied.
)为研究对象 ,引进生态位适宜度理论对受密度和打顶时序调控的高产棉花生态位适宜度进行了研究。
5) the time of wiping the top
打顶时间
1.
Five factors quadratic regression rotation design was used in this test to investigate the effects of plant spacing,nitrogen fertilizer,the time of wiping the top,boron fertilizer,IAA on the protein content of flue-cured tobacco.
采用五因素二次正交回归旋转组合设计,研究不同株距、氮肥用量、打顶时间、硼肥、IAA对烤烟蛋白质含量的影响。
2.
Five factors quadratic regression rotation design is used in this test to gain the influence that plant spacing, nitrogen fertilizer, the time of wiping the top, boron fertilizer, IAA may give to the quality of blue- tobacco.
采用五因素二次正交回归旋转组合设计，研究不同株距，氮素，打顶时间，硼肥，IAA对烤烟品质的影响。
3.
Five factors quadratic regression rotation design was used in this test to gain the influence that plant spacing, nitrogen fertilizer, the time of wiping the top, boron fertilizer, IAA may give to the ratio between alkali and nitrgen of flue-cured tobacco.
采用五因素二次正交回归旋转组合设计,研究不同株距、氮素、打顶时间、硼肥、IAA对烤烟氮碱比的影响。
6) run-time stack top
运行时期栈顶
补充资料：打顶
1.掐去某些作物的顶尖，使之增产。也称打尖。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条