Note that when the drug concentration and the application site are applied, the preparation method and concentration of the drug, the number of administrations, and the application site must be strictly controlled. If 2,4-D is used to prevent tomatoes from falling, they can only be treated with flowers. Do not apply them to whole plants or onto young shoots or young leaves. Otherwise, they will cause phytotoxicity.
Pay attention to the application period The application period mainly depends on the developmental stage and the application purpose of the plant. For example, the use of ethephon to induce the formation of female pumpkin flowers, must be sprayed in the seedling stage with 4 to 6 leaves, too late application, the sex of the early flower has been set, can not reach the purpose of inducing female flowers. In addition, application of the plant growth regulator should be performed on a cloudy day or sooner or later.
Note that plant growth regulators cannot be used in place of fertilization in combination with cultivation measures and must be combined with reasonable cultivation measures. If ethephon is used to treat cucumbers, cucumbers can produce more female flowers and more melons. However, when the conditions such as fertilizers and water are insufficient, it will lead to small melons and low fruit setting rate, and can not obtain high yields.
Led Facial Mask,Led Light Facial Mask,Led Therapy Facial Mask,Led Facial Skin Care Mask
Shenzhen Jie Zhong Lian Investment Co., Ltd. , https://www.meizons.com