CN-121970642-A - Production method of selenium-enriched sweetsop

CN121970642ACN 121970642 ACN121970642 ACN 121970642ACN-121970642-A

Abstract

The invention provides a production method of selenium-enriched sweetsops, which comprises the following steps of S1, carrying out selenium solution spraying treatment on the sweetsops in the bud differentiation period of the sweetsops, carrying out three times of spraying treatment on the sweetsops at intervals of about 30 days, S2, carrying out selenium solution spraying treatment on the sweetsops in the flowering and fruit setting period of the sweetsops, carrying out two times of spraying treatment at intervals of about 30 days, and S3, synchronously carrying out the selenium spraying treatment of the step S1 and the selenium spraying treatment of the step S2 on the sweetsops. The invention realizes accurate and controllable selenium consumption, greatly reduces cost, remarkably improves the selenium content of the produced sweetsop fruits, and improves the oxidation resistance of the fruits to different degrees and the comprehensive quality by newly adding selenium element functional value and transforming the functional fruits into special functional fruits on the basis of retaining original nutrition.

Inventors

CHEN JIANJUN
CUI JIAHUI
WU YINGTIAN
PENG LEI
BAI YADONG

Assignees

云南农业大学

Dates

Publication Date: 20260505
Application Date: 20260209

Claims (7)

1. The production method of the selenium-enriched sweetsop is characterized by comprising the following steps of: s1, in the bud differentiation period of the annonaceous acetogenins, carrying out selenium solution irrigation treatment on the annonaceous acetogenins, and carrying out irrigation three times at intervals of about 30 days; s2, spraying selenium solution to the annonaceous acetogenins in the flowering and fruit setting period, wherein the spraying is carried out twice at intervals of about 30 days; And S3, synchronously implementing the spraying treatment of the step S1 and the spraying treatment of the step S2 on the acetogenins.
2. The method of claim 1, wherein the selenium solution is sodium selenite pentahydrate solution, and the concentration of the selenium solution is about 750mg/L by pouring Shi Nongdu to the solution, and the concentration of the selenium solution is about 50mg/L by spraying.
3. The method for producing the selenium-enriched sweetsop according to claim 2, wherein the solution is poured Shi Xi by digging an annular fertilization ditch around the crown, uniformly injecting the selenium solution into the ditch, and covering soil after infiltration.
4. The method for producing the sweetsop rich in selenium according to claim 1, wherein the selenium solution is sprayed uniformly on the whole fruit tree by using a sprayer.
5. The method of claim 1, wherein the irrigation is performed once during flower bud differentiation, flowering and fruiting, and fruit expansion.
6. The method of claim 1, wherein the spraying is performed once during the flowering and fruiting period and the fruit expanding period.
7. The method of claim 1, further comprising performing conventional water and fertilizer management and pest control during the selenium application process.

Description

Production method of selenium-enriched sweetsop Technical Field The invention belongs to the technical field of agricultural planting, and relates to a production method of selenium-enriched sweetsop. Background Selenium (Se) is a trace element essential to human body, and has various physiological functions of resisting oxidation, enhancing immunity, preventing cancers and cardiovascular diseases, etc. However, the human body cannot autonomously synthesize selenium and must take it through food. About 72% of the domestic soil belongs to areas with low selenium or low selenium, so that the selenium content of most crops and fruits is generally low, and the daily needs of human bodies are difficult to meet. Therefore, increasing selenium content of crops by agricultural technology has become one of the important directions in functional agricultural research. Annona squamosa (Annona atemoya L.), commonly known as Sakya fruit and Buddha's head fruit, is one of tropical fruits, and has rich nutrition, and is rich in amino acids, vitamins, minerals and various active substances such as sweetsop lactone, alkaloid, etc., and has good antioxidant, antitumor and antibacterial activities. At present, the cultivation of the sweetsop is mainly managed by the conventional method, the selenium content of the sweetsop is generally low, and the potential of the sweetsop serving as a selenium-rich functional food cannot be exerted. In the prior art, the method for enriching selenium in crops mainly comprises two methods of soil selenium application and leaf surface selenium spraying. However, selenium enrichment technology for sweetsop fruit trees is less studied, and a systematic optimization scheme of selenium application period, concentration and mode is lacking. The existing method has the problems of low selenium utilization rate, high cost, complex operation, unstable selenium content and the like, and is difficult to realize standardized and large-scale production. Therefore, development of an sweetsop production method which is simple and convenient to operate, controllable in cost, stable in selenium content and meets the national selenium-rich standard is needed, so that the requirements of the market on high-quality selenium-rich fruits are met, and the added value and the competitiveness of the sweetsop are improved. Disclosure of Invention The invention aims to solve the technical problems that the existing sweetsop cultivation has generally lower selenium content and lacks a systematic selenium-rich production method, and provides the selenium-rich sweetsop production method which is simple and convenient to operate, has controllable cost and stable selenium content and can remarkably improve the fruit quality. In order to solve the technical problems, the invention provides a production method of selenium-enriched sweetsop, which comprises the following steps: s1, in the bud differentiation period of the annonaceous acetogenins, carrying out selenium solution irrigation treatment on the annonaceous acetogenins, and carrying out irrigation three times at intervals of about 30 days; s2, spraying selenium solution to the annonaceous acetogenins in the flowering and fruit setting period, wherein the spraying is carried out twice at intervals of about 30 days; And S3, synchronously implementing the spraying treatment of the step S1 and the spraying treatment of the step S2 on the acetogenins. Further preferably, the selenium solution is a sodium selenite pentahydrate solution, and the concentration of the selenium solution is about 750mg/L by pouring Shi Nongdu and 50mg/L by spraying. Further preferably, an annular fertilization ditch is excavated around the crown, selenium solution is evenly injected into the ditch, and soil is covered after infiltration. Further preferably, the selenium solution is uniformly sprayed on the whole fruit tree by using a sprayer. Further preferably, the irrigation treatment is performed once in each of the flower bud differentiation period, the flowering and fruit setting period, and the fruit expansion period. Further preferably, the spraying treatment is performed once in each of the flowering and fruiting period and the fruit expanding period. Further preferably, the method further comprises performing conventional water and fertilizer management and pest control during the selenium application treatment. Compared with the prior art, the invention has the following beneficial effects: Firstly, the selenium content is obviously improved, and by adopting about 750mg/L of selenium solution and 50mg/L of selenium solution for irrigation and spraying, the invention can obviously improve the selenium content of the Annona squamosa Linn by adopting different methods, so that the selenium content of fruits reaches about 49 mug/kg, which is far higher than that of a control group, and is in the national standard range (10-50 mug/kg). After the selenium solution is applied to the soil, th