Micro-film calcium fruit sunburn protective agent and preparation and application method thereof

Abstract

The invention discloses a micro-membrane calcium fruit sunburn protective agent as well as preparation and application methods thereof, and relates to the technical field of plant protection. The micro-membrane calcium fruit sunburn protective agent is prepared from the following raw material components in parts by weight: 40-80 parts of zinc oxide, 10-20 parts of nanoscale calcium carbonate, 1-1.5 parts of a penetrating agent, 1-1.5 parts of a thickening agent, 3-5 parts of a spreader and 80-120 parts of deionized water. Zinc oxide can effectively absorb and scatter ultraviolet rays, relieveburn of crop leaves, stems, stamens, fruits and the like caused by excessively strong direct light, reduce the surface temperature of the fruits, and meanwhile, do not influence photosynthesis of theleaves; the nano calcium can enter crops through the surface layers of the crops, supplement calcium, prevent physiological diseases caused by nutrient deficiency of the crops, improve the quality offruits, increase the hardness of the fruits and effectively prolong the storage time of the fruits. A layer of protective film is formed on the surfaces of fruits after the micro-membrane calcium fruit sunburn protective agent is sprayed, fruit sunscald is effectively prevented and treated, and the commodity rate of the fruits is greatly increased; the use is simple and convenient, the use amountis small, the effect is direct, the effect is obvious, the labor cost expenditure is reduced, and good economic benefits and wide market prospects are realized.

Description

technical field

[0001] The invention belongs to the technical field of plant protection, and in particular relates to a microfilm calcium fruit sunburn protectant and its preparation and application method.

[0002] technical background

[0003] Sunburn is a physiological disease caused by solar radiation heat. During the hot and dry seasons in summer and autumn, direct sunlight on the exposed fruit tree branches and fruits can cause burns when the surface temperature reaches above 40°C. The bark damaged by sunburn will fall off in severe cases, or dry and crack. The fruit epidermis is sunburned, first turns white, and then browns. In extremely dry weather, continuous high temperature, relative air humidity below 50%, insufficient underground water supply, and weakened transpiration, direct strong light can also cause burns to the leaves of fruit trees such as apples and pears.

[0004] In order to prevent sunburn, fruit farmers often use stickers, fruit whitening, and sun...