Studies of the effect of composition and concentration of nutrient solution on volatile compounds in herds.

1.对土壤栽培和水培栽培芹菜的生长发育及挥发性物质进行了研究。挥发性化合物含量随叶绿素含量的增加而增加，随生长速率的增加而减少。研究了营养液中磷浓度对小茴香、罗勒、柴草和薄荷生长及挥发性物质的影响。随着磷浓度的增加，这些草本植物的生长都得到了促进，但对挥发性化合物影响不大。因此，磷的最佳浓度估计为4-8Me/1.3。研究了营养液浓度、K/Mg比和光照条件对甜罗勒生长和挥发性物质的影响。重度遮荫抑制生长，在营养液浓度达到最大时促进生长。生长条件越好，挥发性物质含量也越高。对甜罗勒的繁殖和采收方法进行了研究。8片贴叶插条，光照小于10小时可促进生根。连续收获比一次收获产量高，对挥发性物质含量影响不大。

1. Growth and volatile compounds of celery grown by soil and hydroponics were studied. The volatile compounds increased with increasing chlorophyll content and decreased with increasing growth rate.2. Effect of P concentration in nutrient solution on the growth and volatile compounds of dill, sweet basil, chaives and peppermint was studied. The growth of these herbs was promoted with increasing P concentration but volatile compounds were little affected by treatment. Therefore, optimum concentration of phosphorus was estimated 4-8 me/l.3. Effect of concentration, ratio of K/Mg in nutrient solution and light conditions on growth and volatile compounds of sweet basil was investigated. The growth was inhibited with heavy shading and was promoted under full strength of nutrient solution concentration. Volatile compounds contents alsoincreased with better growth condition.4. Propagation and harvesting method of sweet basil were investigated. 8 leaves attached cutting with less than 10hrillumination promoted root regeneration. Successive harvesting resulted higher yield than simultaneous harvesting with little affect to the volatile compounds content.