Root salt control method for sweet potato and Kochia scoparia interplanting of saline-alkaline land

Abstract

The invention provides a root salt control method for sweet potato and Kochia scoparia interplanting of saline-alkaline land. The root salt control method comprises the step of laying an infiltration layer, wherein the infiltration layer contains melon-seed-shell activated carbon, plum tree wood sawdust, vermiculite, Platanus orientalis bark and coco coir. The root salt control method has the beneficial effects that the root salt control method for sweet potato and Kochia scoparia interplanting, provided by the invention, has a good amendment effect on physicochemical properties of soil in the saline-alkaline land; and 3 months later, the total porosity of the soil of a soil layer which is located below sweet potato plants by 10cm to 30cm is 59% to 68%, the total porosity of the soil of a soil layer which is located below the sweet potato plants by 30cm to 50cm is 57% to 66%, the salt content of the soil of the soil layer which is located below the sweet potato plants by 10cm to 30cm is 0.14% to 0.18%, and the salt content of the soil of the soil layer which is located below the sweet potato plants by 30cm to 50cm is 0.15% to 0.21%.

Description

Technical field [0001] The invention relates to a method for controlling salt by roots of interplanting sweet potato and Kochia scoparia in saline-alkali soil, and belongs to the technical field of agricultural utilization. Background technique [0002] The current water and land resources in our country can only guarantee 500 million tons of food production capacity, which is far from meeting the huge demand of the growing population. At the same time, the contradiction of my country's energy shortage is becoming increasingly acute, and the development of biomass energy must guarantee the premise of "food security". The various coastal tidal flats with a total area of ​​nearly 40 million mu in my country are an important reserve land resource in China. The development and utilization of saline-alkali soil along tidal flats can not only provide a source of food, but also become a production carrier for important salt-tolerant plants such as energy. [0003] From the current point ...

AI Technical Summary

Problems solved by technology

[0006] 1. The effect of improving the physical and chemical properties of soil in saline-alkali land is poor;

[0007] 2. The salt content in the soil cannot be well controlled within the range suitable for plant growth;

[0008] 3. Poor adjustment effect on the concentration of soil ions in saline-alkali land

However, sandy loam soil lacks nutrients, has poor water retention, and is susceptible to drought. Fertilization and soil improvement are necessary to obtain high yields.

Sticky and heavily compacted soil has good water retention capacity, but poor air permeability and is susceptible to waterlogging damage. The shape of the root is slender, the skin is thin and light in color, the root tuber contains a lot of water, the drying rate is low, the taste is poor, and it is not resistant to storage

Images