Looks like the reason
Flourishing plants grow, strong vegetative growth, reproductive growth, although have some flowers, but after some flowers fruit nutrition supply to form a frozen fruit.
Prevention: available plant growth regulator adjusting plant growing, balanced nutrition supply, reduce the incidence of frozen fruit.
The temperature reason
Long ground temperature is low, plant root absorption ability is weak, the fruit nutritional deficiencies to form a frozen fruit.Again is eggplant flower, high temperature, also easy to form frozen fruit (dotted optimum temperature is 23 ~ 28 degrees Celsius, if more than 30 degrees Celsius is easy to form frozen fruit).
Prevention: promote the ground temperature rise, spend if the temperature on the high side stop points.
Deficiency causes
Due to the lack of microelement boron plant leads to poor flower bud differentiation, cause deformity, stigma small and style color such as black, even some flowers are easy to form frozen fruit.
Prevention: can timely spraying speed or borax boron and boron reduce frozen fruit.
Some flowers for
In eggplant flower, if ordered without the flowers open, also easy to form frozen fruit.
Prevention: eggplant flowers should be in flowers of advisable, 1 ~ 2 days early to form frozen fruit, late fall off easily.