Because of the experiments in series 1 and series 2 cannot identify the result from the experiment in series 1 which unable to determine whether the water level dropped caused by dehydration of the plant or the evaporation of water. Including weather and humidity that affected the transpiration of plants in experiments in series 2. And this problem we will be provide to improve error correction by use the experiment in series 2 which more reliable than the experiment in series 1 to improve it strength and experiment in appropriate weather ,suitable for the transpiration of plant which will lead to the experimental results and the conclusion