Q: Wu Shouguo, Wuwei County, Anhui Province: Using the method of covering non-woven fabrics to cultivate rice transplanters, how can plant growth regulators such as paclobutrazol be used during the breeding period? Answer: The planting height of rice seedlings is required to be about 20 cm. It is beneficial to increase the age and elasticity of plant growth regulators such as paclobutrazol in the growth stage of seedlings. Usually in the seedling 1 leaf 1 heart to 2 leaf 1 heart with paclobutrazol 200-300 mg / l solution spray. Double anti-fog double films face shield Double anti-fog double films face shield Dongguan Marvec Electronic Technology Co.,Ltd , http://www.marvec-cn.com