How to grow corn in saline soil? Saline-alkali corn planting technology

Saline-alkali land is a kind of salt accumulation. It means that the salt contained in the soil affects the normal growth of crops. It is expressed by PH value: the pH value of mild saline-alkali soil is 7.1-8.5, and the general emergence rate is 70%-80. %; medium salinity ground PH value: 8.5-9.5, heavy saline-alkali soil PH value: 9.5 or more, the general emergence rate is less than 50%. Is that saline-alkali land only ruined? Although the emergence rate of saline-alkali land is not as high as that of normal land, it is also able to grow crops, but it needs to be managed more carefully during the planting process. Let us look at the corn planting technology in saline-alkali soil.

盐碱地种植玉米

First, the variety selection

Choose salt-tolerant corn varieties, such as the Zhongke 968 variety Jingke 968.

Second, the drainage ditch

Drain the drainage ditch before planting in advance for drainage during irrigation.

Third, field management:

1. Deep ploughing

After the fall harvest, deep ploughing and deeping the land, the salt distributed in the topsoil is turned to the bottom of the plough layer, and the lower layer of soil with less salt is turned to the surface. At the same time, tillage can loosen the plough layer, cut off the soil capillary, and weaken the evaporation of soil moisture, which can effectively control soil return to salt.

2. Adding biological bacteria, bacterial fertilizer and organic fertilizer

Saline-alkali land generally has the characteristics of low temperature, thin soil and poor structure. After the biological bacteria or bacterial fertilizer is mixed with the organic fertilizer, the organic fertilizer is decomposed and transformed into humus by microorganisms, which can improve the buffering capacity of the soil, and can form sodium humate with sodium carbonate to reduce soil alkalinity.

玉米种植

3. Leveling the land

Level the land before planting to increase the effect of salt spray and irrigation salt washing to prevent soil salinization.

4, large washing salt

Washing salt is the irrigation of large water, so that the soil salt is dissolved. The soluble salt in the topsoil is discharged into the deep soil through infiltration, and the side infiltration is dug in advance to remove the drainage ditch.

5, timely irrigation after a light rain

Light rain can easily make the salt in the soil concentrate through the soil capillary to the topsoil, affecting the normal growth of the corn, often leading to purple or dead seedlings. Timely irrigation will wash the salt from the topsoil to facilitate corn growth.

盐碱地种植玉米


6, timely ploughing


Temporary tillage after emergence can cut off the capillary water from the soil and transport salt to the surface to prevent salt return.

The above is the cultivation technology of corn in saline soil. The formation of alkaline soil and alkalized soil in China is mostly related to the accumulation of carbonate in the soil, so the degree of alkalization is generally higher. The root cause of the formation of saline-alkali soil is poor water quality, so in the early stage of planting, the focus should be on improving the soil moisture.

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