Although the film roots of fruit trees can increase the temperature of the ground and keep the moisture after watering from evaporating and increase the survival rate, the summer diseases are more unfavorable. The reason is: With the increase in ground temperature in the summer, not only the heat of the soil covered by plastic film can not spread out, but the increase of heat absorption of the agricultural film, it is easy to cause root-burning suffocation death (newly planted fruit trees more serious). In addition, when the water around the root system is depleted, the agricultural film isolates the surface of the soil and does not come into contact with the recharge of rainwater, which also affects the development of the roots. Therefore, it is not advisable to remove the plastic film if the film is used before the tree has survived or the high temperature has come. Grass is best used in summer. China Extract Powder For Use As Dietary Supplement Extract Powder, Extract Powder Manufacturer Shaanxi Kang New Pharmaceutical co., Ltd. , https://www.kangnewpharmas.com