Application of Jerusalem artichokes on improving saline and alkaline land

Abstract

The invention provides an application of Jerusalem artichokes on improving a saline and alkaline land. The Jerusalem artichoke is the south Jerusalem artichoke No.1 and the steps for improving are as follows: planting the Jerusalem artichokes on the saline and alkaline soil with the salt content of 0.5-0.8 wt%; sowing seeds in the first year: flattening the land; applying potassium sulfate compound fertilizer; after the Jerusalem artichokes grow ripe, wholly returning roots, stems and leaves of the Jerusalem artichokes back to the field; farming the saline and alkaline land in the second year: after the Jerusalem artichoke germinates and grows until the length is 15-25 cm, thinning; controlling an acre number to 4800-5200 plants and applying 30-35 kilograms of potassium sulfate compound fertilizer into each acre, wherein the others are the same as the farming of the first time; farming the land in the third year: repeating the farming method of the second year to finish the improvement of the soil. The south Jerusalem artichoke No.1 provided by the invention has the advantages of strong adaptability and wide distribution area, and can be applied in the saline and alkaline land soil of northeast China, Inner Mongolia, Hebei, Shandong, Gansu, Shaanxi, Jiangsu and the like to improve the local saline and alkaline lands.

Description

[0001] technical field [0002] The invention belongs to saline-alkali land improvement and planting technology in agriculture and forestry, and specifically relates to a soil salt control method for planting Jerusalem artichoke on saline-alkali land with a salt content of 5‰-8‰. [0003] Background technique [0004] Saline-alkali land is a type of soil widely distributed on the earth and an important land resource. It means that the salt contained in the soil affects the normal growth of crops. According to incomplete statistics from UNESCO and FAO, the saline-alkali land area in the world is 954.38 million hectares, accounting for 10% of the arable land area, of which 99.13 million hectares is in my country, accounting for about 25% of the country's arable land area. The problem of land salinization is closely related to human activities. It not only causes the destruction of resources and the huge loss of agricultural production, but also poses a threat to the biosphere...

AI Technical Summary

Problems solved by technology

The improvement and treatment methods of saline-alkali land mainly provide a full range of methods, applying soil subsoiling agent and saline-alkali soil amendment to the deeply loosened soil, formulating microbial organic fertilizer according to the detected soil components, and adopting the nutrient balance method And nitrogen, phosphorus and potassium ratio method: reduce the amount of soil fertilizer supplied by the amount of fertilizer required for the target output, and the difference is supplemented by fertilization, and then plant green manure-salt-alkali-tolerant high-yield feed crops after raising ridges and draining water to control salt Jerusalem artichoke is used to improve soil, the characteristics of the improved Jerusalem artichoke are not indicated, the improvement cycle is not stated, and the economic cost of applying improvers is not stated, the difficulty of popularization is not clear, and the applicable area is also not stated. It is not clear whether it is suitable for China. The promotion of vast saline-alkali areas, especially the improvement effect on saline-alkali areas with a salt content of 5‰-8‰ in the vast saline-alkali areas of my country

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