The acidity of the soil, which is the pH of the soil, is a very important indicator in agricultural planting. It is usually measured directly using a soil pH meter. Generally, the crop has its optimum pH range, too acidic or too acidic. Alkaline soil environment, many crops can not grow very well, even if the soil moisture, nutrients, etc. is very sufficient, it will lead to crop malnutrition, so in order to ensure the good growth of the crop, often need to use the soil pH meter to adjust school.
Because the plant roots can only perform normal metabolic activities, including respiration, ion exchange, and absorption of various nutrient elements, only within a certain pH range, the soil pH meter often becomes an important measure to regulate soil pH, but Before school, we first need to know the appropriate pH for different crops to grow, and use this as a basis for scientific improvement. According to the analysis of soil pH meter, the range of soil ph suitable for growing some vegetables was as follows:
Suitable ph range for growing vegetables
crop
Optimal ph range
crop
Optimal ph range
radish
6.0-7.0
watermelon
6.0-7.0
carrot
5.3-7.0
melon
6.0―6.8
tomato
6.0-7.0
Loofah
6.0-6.5
cucumber
5.5―7.0
Bitter gourd
5.5―6.5
Cabbage
6.0-7.0
Melon
5.5―7.6
spinach
6.5-7.5
squash
5.5―6.8
celery
6.0-7.0
Chinese cabbage
6.5-7.0
chili
6.2―7.2
lettuce
6.0-7.0
eggplant
6.8-7.3
garlic
5.6-6.0
cowpea
6.2-7.0
shallot
7.0―7.4
pea
6.0―7.2
potato
4.8-5.5
sweet potato
5.0-6.0
Konjac
6.5-7.5
Knowing that these vegetable crops are suitable for growing soil pH, in the production process, if the use of a soil pH meter determines that it does not meet the requirements, measures can be taken to improve. Because soil pH directly affects the existence, transformation, and availability of soil nutrients, which affects plant growth and development, and soil pH values ​​are easier to measure than other soil indicators, and only professional soil acidity meters are used. However, in modern agriculture, soil pH is often used as an important reference for soil classification, utilization, management, and improvement, while soil acidity meter has high accuracy, small error, convenient carrying and measurement, and quick pH and pH. Such advantages have also become the conventional method for measuring soil pH in the field.
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