Plant growth regulation composition, and preparation and application thereof

Abstract

The invention provides a plant growth regulation composition, and a preparation and application thereof. The plant growth regulation composition comprises N-(2-fluoro-4-pyridyl)-N'-phenyl urea and a plant growth promoter comprising one or more of gibberellic acid, thidiazuron, brassinolide and triacontanol. According to the plant growth regulation composition, N-(2-fluoro-4-pyridyl)-N'-phenyl urea and the plant growth promoter are combined, so that the consumption of the plant growth promoter for regulating setting of fruits is greatly reduced, and hardening of stems of the fruits is avoided.

Description

technical field [0001] The invention relates to the field of pesticides, in particular to a plant growth regulating composition and its preparation and application. Background technique [0002] Plant growth regulators are exogenous non-nutritive chemical substances that can usually be transmitted to the site of action in plants to make them develop in a direction that meets human needs. Its existence can affect and effectively regulate the growth and development of plants, including a series of plant life processes from cell growth and division to rooting, germination, flowering, fruiting, maturation and shedding. [0003] The fruit expander is a plant growth regulator, which can promote and speed up the growth of plants, and can promote fruit growth and expansion. Common plant growth promoters used for fruit enlargement include forchlorfenuron, gibberellic acid (including GA3 and GA4+7), thiadizuron and brassinolide, all of which can increase parthenocarpic rate and fruit...

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Problems solved by technology

[0004] However, in the currently disclosed fruit bulking agents, in use, gibberellic acid can be sprayed on fruit ears or directly soaked in fruit, and the spray concentration or soaking concentration is 10-20 mg / kg; For fruit ears, forchlorfenuron is used at a concentration of 10-20 mg / kg, and forchlorfenuron gibberellic acid is used at a concentration of 10-30 mg / kg; currently only forchlorfenuron is registered on loquat, and the young fruit is soaked at a concentration of 10 ~20mg / kg; the use concentration is relatively high; moreover, if the composition of forchlorfenuron or forchlorfenuron gibberellic acid is used as a bulking agent for grapes, there will be a problem of hardening of grape fruit stems. During the lifting process, due to Fruits are more likely to drop if they squeeze each other; while only forchlorfenuron or thiadizuron is used as a bulking agent, the grapes will cause the fruit to grow too densely during the growth process, and fruit particles will squeeze each other when encountering wind, rain, etc. And rupture, encountering rainfall or high humidity environment, will increase the incidence of gray mold. Many researchers in China use gibberellic acid to elongate grape ears and increase the distance between grape grains to reduce the incidence. The fruit shape is too elongated, which is quite different from the conventional fruit grains; therefore, it is currently necessary to seek a bulking agent that can be applied to grapes and other crops to obtain a good fruit shape, fruit stems that are not hardened, and a low concentration. question

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