四、在实践中创造技法艺术劳动是属于脑力劳动的,因此,在实践中从客观条件出发与具体形象相结合是非常必要的,许多技法都是通过这样长期的实践创造出来的,通过推敲成为理论性的东西。但,有时在实践中“卡壳了”,心中无数,不知如何是好,尤其是对初学水彩画的人们来说是常有的事。如:此处景物甚妙,但,看不清色彩之间的对比关系。开始觉得是偏暖色,可呆了一会,又转冷了。涂上冷色时,对比又可能转暖了,这样反反复复,画面总是不肯定。既浪费了时间,又打乱了思路。出现这种局面的原因,大部分产生存色彩关系上。人们的眼睛有专门感受色彩的棒形细胞。当它长时间盯住某一地方时,棒形细胞疲劳,则色彩的感受力就会迟钝,色彩形象也就模糊了。这时需要 Fourth, to create skills in practice Art work is mental work, therefore, in practice from the objective conditions of the combination with the specific image is very necessary, and many techniques are created through such long-term practice, by scrutiny as Theoretical thing However, sometimes in practice, “stuck”, countless hearts, I do not know how to be good, especially for beginners watercolor people is common. Such as: the scene here is very good, but, can not see the contrast between color. Start feeling is warm, can stay for a while, turn cold again. Painted cool, the contrast may be warming up, so repeatedly, the picture is always uncertain. Not only wasted time, but also disrupted ideas. The reason for this situation, most of the existence of color relations. People’s eyes have a special feeling of color stick cells. When it is a long time pegged to a certain place, the stick-shaped cells are tired, then the sensibility of color will be dull and the color image will be blurred. This time need