Method for fruit cracking control for Lingwu long jujube

Abstract

The invention discloses a method for fruit cracking control for Lingwu long jujube, which includes: selecting a yard, cultivating Lingwu long jujube, regulating greenhouse covering time, regulating tree crowns and fruits and flowers, regulating temperature and humidity, regulating nutrition, controlling pests and diseases and the like. The base of a trunk of a Lingwu long jujube tree in a full bearing period is girdled at a position 10-15cm away from the soil, girdling width is no larger than one tenth of the diameter of the trunk, and gibberellin 15-20mg / L is sprayed once to twice during the full-blossom period at an interval of 7-10 days. Nutrients are sprayed to enhance thickness and hardness of fruit peel before flowering of the Lingwu long jujube tree and in the medium and late stage of fruit development. By means of the method, application of advancing maturity to controlling fruit cracking in protected cultivation of Lingwu long jujube is successfully and technically broken through in Jinghai county of Tianjin, the technical problem of fruit cracking which bothers jujube growers for long is solved effectively, yield and quality of fresh jujube are improved, insecticide spraying frequency is reduced, insecticide residue is decreased, the safe and nutritious health food is provided for consumers, a new way of increasing income for jujube farmers is exploited, and remarkable economic benefit and social benefit are achieved.

Description

technical field [0001] The invention belongs to the technical field of agricultural trees, and relates to a method for preventing and controlling fruit cracking of Maya jujube. Background technique [0002] With the development of society and the improvement of living standards, the nutritional and health value of fresh jujube has been more and more recognized by people. Generally, the area is from late September to early October, and there is a lack of early and medium-ripening fresh jujube varieties in the market. Therefore, in order to make up for the shortage, Jinghai County selected strong stress-resistant jujubes in the "Eleventh Five-Year" fruit tree variety structure adjustment plan. , High-quality early-medium-maturing fresh-eating Maya jujube is used as the main species for development, and it is planted on a moderate scale. The fruit of Maya jujube has a beautiful appearance, uniform size, thin skin, crispy sweetness, and juiciness. The sugar content of fresh juj...

AI Technical Summary

Problems solved by technology

The fruit of Maya jujube has a beautiful appearance, uniform size, thin skin, crispy sweetness, and juiciness. The sugar content of fresh jujube is 35.3%, and the vitamin C content per 100g is 332.8 mg. The overall quality is comparable to that of winter jujube. In mid-to-late August, it is the first variety of fresh jujubes cultivated in the open field. Now the average price per kilogram is 16 yuan, which is 4 yuan higher than the average price of winter jujube at 12 yuan per kilogram. Moreover, it bears early, easy fruit and high yield , the tree is small and easy to manage. After more than ten years of large-scale planting, jujube farmers have obtained high economic benefits, but there is a prominent problem in actual production. %, and more than 50% of the fruit cracked in severe years. Especially in 2007, due to the drought in June and July, it was rainy for nearly 20 days in mid-August. The quantity gradually increased, because the peel was thinner, the elasticity decreased, and the toughness was poor. As a result, a large number of Maya jujube fruits were cracked. According to the survey of the Maya jujube garden in Jinghai County, the fruit cracking rate of severe plots reached 54%, and the yield loss reached more than 65%. In that year, 15,000 mu of Maya jujube was planted in the whole county, and the total output loss was estimated to be about 3.9 million kilograms, which seriously affected the output, commodity rate and economic benefits of Maya jujube. Carried out a special study on the problem of fruit cracking of jujube, and established a 1.8-acre plastic cold shed in Ma Guangcheng Garden, Zhangjia Village, Wangkou Town, Jinghai County, and implemented cold shed cultivation demonstrations, and at the same time implemented techniques such as spraying plant synergistic calcium and Qibao-cracking agent, Through the three-year test and demonstration results from 2009 to 2011, the fruit cracking rate of Maya jujube in the greenhouse was controlled below 3%, and the yield per mu increased by 17.5% on average, the commercial fruit rate reached more than 98%, and the price per kilogram of jujube fruit increased by 6 on average. 3 times, the average increase in income and expenditure per mu in 3 years was 10,033 yuan. The effect is very remarkable. At present, we have mastered the technical method of preventing and controlling the cracked fruit of Maya jujube, and have driven the surrounding Maya jujube growers to come Learn and apply to achieve good economic and social benefits