If you do not use a soil pH meter to measure, you may not know that the current proportion of acid soils in China will be so great that it has seriously affected the yield and quality of agricultural production in China. Planting crops on such soils is not only not easy for whole seedlings. Efforts are made to form young seedlings and old seedlings, and the yield is low and their quality is poor. Therefore, if the soil is found to be acidic soil, it is not time to plant crops but to carry out acid soil improvement to improve soil quality. In this process, soil acidity meter can play a very important guiding role.
Acidic soils are typically characterized by “acids.†This acidity can be measured using a soil pH meter. For example, we generally refer to acids below pH 6 as acidic soils. The other three characteristics of acid soils are “thinâ€. That is, low-yield nutrients, organic matter below 1.5%, a serious lack of available phosphorus; "sticky", soil viscous, poor ploughing; "deep" earth color mostly red, yellow, purple. To carry out acid soil improvement, the first is to use a soil acidity meter to determine whether the current soil is acidic soil and the extent of its acidity, so that we can work out a scientific and reasonable and acidic soil improvement program.
If soil acidometer is used to determine the current agricultural soil is acidic soil, then some effective measures can also be adopted to improve soil acidity and increase soil fertility, such as adding farmyard manure to cultivate soil fertility to achieve improved cultivation. The purpose of sexuality and fertility, as well as the purpose of improving yields and increasing profits; and in order to avoid wasting land in the process of improvement, it is also possible to plant some acid-resistant crops such as mung bean, red radish, rapeseed, buckwheat, red orchid grass and rice. , Through the use of edge transformation, through the adjustment of soil acidity; can also implement the paddy crop rotation, timely increase of lime, improve the cultivation techniques to improve the physical and chemical properties of the soil, adjust the pH of the soil to an appropriate range to meet the good growth of the crop need.
Other Furniture Aluminum Die Casting Parts
Comparing the die-casting alloy with the material processing method, the equipment used is different, and its raw materials are aluminum ingot (purity of about 92%) and alloy material, melted by a melting furnace, and then molded into a die-casting machine. The shape of the die-cast aluminum product can be designed as an image toy, with different shapes and connections in various directions. In addition, it has a higher hardness and strength, and can be mixed with zinc to form a zinc-aluminum alloy.
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