Method for cultivating selenium-rich purple Chinese yams

Abstract

The invention provides a method for cultivating selenium-rich purple Chinese yams in a double row and staggered cross mode. The method comprises the steps of cultivating land selection, soil preparation, soil fertilization, guide groove placement, plantation, water retention and sunshade treatment, field management, vine overgrowth restraint treatment, disease and insect pest prevention and treatment, harvest and the like. The method has the advantages that the purple Chinese yams which are planted in guide grooves are uniform in size and weight; the appearance and color are both great, and the problem that the Chinese yams are delicious but poor in appearance is solved. The cultivation method in a double row and staggered cross mode is adopted, and compared with an existing single row cultivation method, the planting amount per mu can be increased substantially; by restraining the overgrowth of vines of the Chinese yams, organic matter compounded through the photosynthesis and the nutrients absorbed by roots of potato tubers are mainly used for the growth of the potato tubers of the Chinese yams, and the yield is increased substantially. The selenium-rich soil is selected for cultivation, in fertilization management, fertilizer containing selenium is applied to soil in each time of fertilization, it is guaranteed that during the whole growth process, the Chinese yams have plenty of selenium to absorb and utilize, and the cultivated purple Chinese yams are rich in selenium element.

Description

【Technical field】 [0001] The invention belongs to the technical field of crop planting, and in particular relates to a planting method of selenium-enriched purple jade yam. 【Background technique】 [0002] Selenium is an indispensable element for the human body. The selenium in the human body is mainly obtained from the daily diet. Therefore, the content of selenium in food directly affects people's daily selenium intake. my country is a selenium-deficient country. There are 22 provinces and regions lacking selenium, and 72% of the population lives in selenium-deficient areas, which require scientific supplementation of selenium. Guangxi is a large selenium-rich province and a large agricultural province. It is uniquely endowed with the development of selenium-rich agricultural products. According to the survey and measurement of the four regions of Nanning, Qinzhou, Beihai, and Guigang by the Guangxi Geology and Mining Department, the area of ​​selenium-rich soil is 31.81 m...

AI Technical Summary

Problems solved by technology

[0004] The existing selenium-enriched purple jade yam planting has begun to adopt a large number of shallow trough directional cultivation techniques, which solves the problem of low yield, curved and bifurcated tubers, uneven tuber sizes, poor appearance, and labor-intensive harvesting in traditional planting techniques. Disadvantages such as large size, difficulty in digging, and easy breakage of Huaishan potato pieces

However, the existing shallow trough directional cultivation technology adopts single-row planting, which leads to a sharp decrease in the planting amount per mu, and the yield per mu is not high.

At the same time, high-density planting will lead to a reduction in the area of ​​photosynthesis, and the problem of "only growing vines but not growing tubers"