At this moment, it is the season when the kiwifruits are harvested. The cars drive in the countryside of Pujiang County, and the fruitful kiwifruit gardens are everywhere. In the kiwifruit garden of Ludingjunjia, in the village of Luping, Daxing Township, Pujiang County, large and well-proportioned kiwi fruits and thick, thick green leaves are covered in trees, and more than 100 kiwifruit planters who came to visit have frequently praised them. The fruit is really good. It has more than 100 grams. This kind of fruit can sell."

It can not only increase production, but also increase taste and taste.

Lu Dingjun’s kiwifruit garden adopts an integrated water and fertilizer solution. One of the core technologies is the use of clopidogrel (commonly known as “expanding agent”) to dip fruit, and there is a control area that is not treated with clopidogrel. The head of kiwifruit is significantly smaller.

Lu Dingjun told reporters that his species of kiwifruit was Hongyang, which was sold at a price of 8.5 yuan per pound on the market. The reporter also told the local purchasers that the purchase price of the kiwifruit in Hongyang was different depending on the size of the fruit shape. The big fruit could be sold for 89 yuan a pound, and the price of the small fruit would be a lot worse. Kiwifruit treated with chlorfenuron is not only cheap but it can also increase yield by at least 1/3.

Farmers have actually benefited from the facts, but many consumers will inevitably have such doubts. Is this kiwifruit that used the swelling agent not worth seeing? In response, the Professional Committee for Plant Growth Regulators of the China Pesticide Development and Application Association specially organized the 2016 Kiwi Tasting Ceremony in Pujiang County on August 20. He invited 18 experts from the industry to personally experience the use of plant growth regulators. What is the difference in the taste of the kiwifruit?

The reporters also tasted the two kiwifruits for comparison. The kiwifruit that had not been immersed in the fruit was slightly harder, and the sweet kiwifruit was sour. The kiwifruit that had been soaked in the fruit was sweeter and softer, and the fruit was full of flavor. Experts in the on-site review stated that the kiwifruit that used the "expanding agent" was not only inferior to the taste of the kiwifruit that did not use the "expanding agent," but it was even better in terms of soluble solids.

Toxicity is lower than salt

In addition to taste, safety is also a concern for consumers. A number of industry experts told the reporter that as long as the use of chloropyrazole is properly regulated, safety is not a problem.

Professor Duan Liusheng, a professor at the China Agricultural University who has studied planting agents for more than 20 years, explained to reporters that the mechanism of action of plant growth regulators is to modulate signal systems such as endogenous hormones in plants, regulate plant growth and development, and not supplement nutrients or kill pests. Because it is non-killing, it is highly secure. 95% of the registered plant growth regulators are highly efficient, low-toxic, environmentally and biologically safe, and there are 7 cropping adjustments in China which are exempt from the establishment of the maximum residue standard in foods, that is, they are highly safe.

“The amount of plant growth regulators used is very small. For example, the amount of clopidogrel used is usually 5-10 mg per kilogram, which is equivalent to putting a small grain of rice into two or three kilograms of water and pounding 500 to 1,000 fruits after application. There are more than 100 days from the harvesting period, and the drug can resolve more than 88.5% of the total amount of clopidazole 21 days after the drug.The metabolism of clopidazole is very fast even after it enters the body, and most of the 14 to 16 hours will be eliminated from the body. "Duan Shengsheng said.

Song Wen, an assistant researcher at the Institute of Agricultural Products Quality Standards, Zhejiang Academy of Agricultural Sciences, said that clopidogrel is a non-endocrine disruptor. Its acute oral and semi-lethal dose is 4,918 mg/kg, compared to 3,200 mg/kg for salt, from this indicator. At the top, it is even less toxic than salt.

Is the key to the advantages and disadvantages

"There is no good thing, but it is a disaster." The effect of clopidogrel on the yield of kiwifruit is obvious, but excessive use will lead to a decline in fruit quality, shape distortion, and a shorter shelf life and shelf life. Experts emphasized that the key to using plant growth regulators is to accurately grasp the amount. In the course of use, farmers cannot pursue fruit trees blindly and must use them strictly in accordance with the prescribed dosage.

Wang Mingzhong told reporters that several scientific research institutes had conducted relevant experiments. The use of appropriate concentrations will help improve the flavor and quality of fruits. However, after treatment with a concentration of 20 mg/L or more and high concentrations of clopidazole, it will make The fruit of kiwifruit is sour and its nutrients are reduced. The fruit quality is degraded and the storage period is affected. If the concentration is too high, it is easy to produce deformed fruit and hollow fruit. Therefore, the use of the concentration should be appropriate, the Hongyang Kiwi fruit, for example, the best use of the concentration of 5 ~ 20mg / L, the most effective period of use is in the 15 to 25 days after flowering, positive value during the rapid growth of fruit use.

Duan Liusheng said that the planting agent is a landmark high-tech for agricultural modernization. Its role is unique, irreplaceable, safe and efficient, and has great potential. It is a powerful scientific and technological weapon for developing modern agriculture and improving quality and efficiency. Only plant growth regulators have high technical requirements on time, concentration, location, and method of use. Therefore, plant growth regulators must face problems, lead innovation, standardize management, and apply scientifically.

“The experience and technology of the scientific use of chloropyrazole is worth promoting.” Cha Xiancai, executive vice president of the China Pesticide Development and Application Association, said that he needs to have confidence in the use of plant growth regulators and should guide the public to understand and understand the plant properly. Adjustments, at the same time to strengthen the application of technology.

Intermediate

Xi'an complex bio-tech CO.,LTD. , https://www.complexpowder.com