CASE3

Lime powder has many important applications in the planting industry, mainly including the following aspects:

1、 Adjust soil acidity and alkalinity

1. Improve acidic soil: The soil in many areas is acidic, which is not conducive to the growth of most crops. The main components of lime powder, calcium oxide and calcium hydroxide, are alkaline and can neutralize acidic substances in soil, thereby increasing soil pH. For example, in some red soil areas in the south, the soil acidity is strong. By applying an appropriate amount of lime powder, the soil pH can be adjusted to a range suitable for crop growth, generally between 6.0-7.5. This can improve the chemical properties of the soil, enhance soil fertility, promote crop root growth and nutrient absorption.

2. Stabilize soil pH: Fluctuations in soil pH can affect the absorption and utilization efficiency of nutrients by crops. Lime powder can play a buffering role, stabilize soil pH value, and reduce soil pH changes caused by factors such as fertilization and irrigation. For example, in long-term cultivated farmland, regular application of lime powder can maintain a relatively stable soil pH value and provide a good growth environment for crops.

2、 Supplement calcium element

1. Promoting crop growth: Calcium is one of the essential nutrients for crop growth, playing an important role in the formation of cell walls, stability of cell membranes, and enzyme activity. Lime powder contains abundant calcium elements, which can supplement the calcium content in the soil after application, meeting the calcium needs of crops. For example, when planting vegetable crops such as tomatoes and peppers, sufficient calcium can prevent physiological diseases such as fruit navel rot, improve fruit quality and yield.

2. Enhance crop stress resistance: Calcium element can also enhance crop stress resistance, improve its ability to resist pests, diseases, drought, high temperature and other adverse conditions. For example, under drought conditions, calcium can maintain the stability of cell membranes and reduce water loss; During the occurrence of pests and diseases, calcium can enhance the strength of cell walls and prevent the invasion of pathogens.

3、 Disinfection and sterilization

1. Killing soil pathogens: Lime powder has a certain bactericidal effect and can kill some pathogenic bacteria and pest eggs in the soil. Applying lime powder before planting or during soil disinfection can reduce the risk of soil borne diseases. For example, before planting crops such as potatoes and strawberries that are susceptible to soil borne diseases, spreading lime powder can effectively reduce the incidence of diseases such as wilt and root rot.

2. Purifying soil environment: Lime powder can improve soil aeration and permeability, promote the growth and reproduction of beneficial microorganisms in the soil, and inhibit the activity of harmful microorganisms. At the same time, it can also adsorb harmful substances such as heavy metal ions and pesticide residues in the soil, purify the soil environment, and provide a healthy soil ecosystem for the growth of crops.

4、 Improving soil structure

1. Promote the formation of soil aggregates: Lime powder can combine with clay particles in the soil to form stable soil aggregates. These aggregates have good aeration, permeability, and water retention properties, which can improve the physical properties of soil, enhance soil fertility and nutrient retention capacity. For example, applying lime powder in sandy soil can increase soil viscosity, reduce soil leakage and loss; Applying lime powder in clayey soil can improve soil aeration and promote root growth.

2. Preventing soil compaction: Long term unreasonable fertilization and irrigation can lead to soil compaction, affecting the growth and development of crops. Lime powder can alleviate soil compaction, making the soil loose and porous, which is beneficial for root extension and absorption of water and nutrients. For example, in farmland with severe soil compaction, applying an appropriate amount of lime powder combined with deep plowing measures can effectively improve soil structure and increase soil productivity.