Fruit trees usually begin to sprout in late March and early April. Most of the flowering and fruit setting will be completed in April. However, the spring weather is warm and cold, and it is often unpredictable. Before the end of April, frost will occur several times in many cases. Many times, it will cause fruit trees to grow poorly after flowering, which will have a great impact on fruit set. The high yield of fruit trees throughout the year has a great impact. If this period of time is not fruitful, the hard work of the vast number of fruit farmers will be wasted.
To this end, special recommendations are made as follows: timely application of plant growth regulators to improve the adaptability of fruit trees to adverse climate conditions. Plant growth regulators can be sprayed on the fruit before flowering or during flower buds. It is important to choose a conditioner that is safe to use, suitable for use in low temperature environments, and can significantly improve the ability of fruit trees to resist stress. At lower temperatures, fruit trees can exert their effects as long as they show signs of growth. Spraying plant growth regulators under conditions of low temperature and low temperature for a long time has the following effects on fruit trees:
1, can improve the ability of fruit trees to resist adverse environments. After spraying growth regulators on fruit trees, the distribution of five endogenous hormones in fruit trees can be adjusted to adapt to changes in climatic conditions. For example, under the stimulation of cold weather conditions, the hormone levels of ethylene and abscisic acid in fruit trees themselves will increase to enhance the ability of the fruit trees to resist cold; under high temperature and dry conditions, it will induce increased abscisic acid in fruit trees and partially close the leaves of the respiratory holes , improve its ability to fight drought.
2, spraying plant regulators and boron, will increase the fruit set rate. Tests have shown that good plant growth regulators can coordinate the absorption of boron by fruit trees, promote the elongation of pollen tubes in fruit trees, promote pollination and fertilization, greatly increase the rate of fruit set, and protect newly formed young fruit from adverse weather conditions. It has a certain degree of resistance to low-temperature, dim-light climates.
3. Spraying growth regulators and calcine during young fruit period has the effect of promoting the expansion of young fruit and improving the absorption of calcium in fruit. Since apple young fruit is in a critical period of cell division, this period is particularly important for the formation of large fruits. Through several years of practice, spraying plant growth regulators in the young fruit period can significantly increase the number of young fruit cells and improve the calcium content of fruit, which has a crucial effect on the size, hardness, and peel brightness of fruit in the later period. Form the foundation for the formation of large fruits and high quality fruit.
Food additives refer to chemical synthetic or natural substances added to food for the purpose of improving the quality, color, aroma and taste of food, as well as for the need of preservative and processing technology. Due to the rapid development of the food industry, food additives have become an important part of the modern food industry, and has become an important driving force of technological progress and technological innovation in the food industry. In the use of food additives, in addition to ensuring their due function and role, the most important thing is to ensure the safety and health of food.
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