In recent years, some farmers have excessive fertilization and unreasonable fertilization. In addition, the effects of long-term heavy cropping in many areas have directly led to many problems such as the decline of soil quality, resulting in poor crop length, low yield, and quality. Drastically falling.
Today, I will share with you a good way to improve soil conditions, solve soil acidification, and effectively kill soil-borne diseases and insect pests. In fact, this method is very simple, that is to use quicklime!
Many people may say: Lime is not used to build a house. Is it related to farming? Some people may say: I have used lime, but I have seen it in the ground! In fact, don't underestimate the lime that can be seen everywhere. It can be of great help in agricultural production, but you must know how to use it, and you must use the right method! Let's share with you: 1 The six positive effects of quicklime on soil crops; 2 The six important considerations for improving the use of quicklime. Because the introduction is relatively detailed, this article is relatively long, please be patient to look down.
1. What are the benefits of quicklime to soil crops?
1. Eliminate the impact of heavy metal pollution
Excessive levels of heavy metals in the soil not only affect the normal growth and development of crops, but also affect the safety of agricultural products due to residues, and it is very difficult to control heavy metals in the soil. The quicklime has strong alkalinity. After being applied to the field soil, it can precipitate most of the metal ions such as iron, aluminum and manganese except for mercury ions, eliminating or reducing heavy metal ion pollution, purifying the crop planting environment and repairing the soil ecology. It has a very significant effect on improving crop yield and quality. It is a good method with low input cost, good treatment effect, simple operation process and fast control effect!
2. Supplementing soil and crops
1 The composition of quicklime contains 55-95% calcium oxide and 10-40% magnesium oxide (the content is related to the purity of quicklime). The application of quicklime to the ground can directly increase the supply of calcium and magnesium nutrients to soil and crops. The amount is more effective in planting crop fields with large demand for calcium and magnesium, and it is more economical and effective than spraying calcium and magnesium foliar fertilizer!
2 Many trace elements in soil are easily fixed in neutral or acidic soils or antagonistic to affect crop absorption, while quicklime can improve soil properties (described below), activate various soil nutrients, and increase effective nutrient accumulation. It is more conducive to the full absorption and utilization of various nutrients by crops. For example, calcium will affect crop absorption due to antagonism with aluminum and hydrogen, and quicklime can eliminate its adverse effects. If lime is used on acidic soil, it can effectively promote beneficial microbial activity and decomposition and digestion, which can increase soil efficiency. The accumulation of nitrogen can promote the release of organic phosphorus; in addition, the calcium ions in the quicklime can exchange the ammonium ions adsorbed and fixed by the soil for the crops to be absorbed... I will not give an example here.
3. Adjust soil pH
For most crops, an acid-base pH environment of 5.5-7.5 is most suitable for root growth. However, most of the current acidification problems in the soil are serious, and most of them are caused by excessive fertilization and irrational use of drugs (mostly acidic). According to statistics, more than 80% of vegetable greenhouses have serious soil acidification problems. The direct consequences of soil acidification are poor crop growth, increasing pests and diseases, and a sharp decline in the quality of agricultural products.
Because quicklime is a strong alkaline substance, it can adjust the pH value well when it is applied to acidic soil, and finally reach the neutrality of soil pH, providing a healthier growth environment for the crop roots. Only the long roots of the crop can grow well. High output and excellent quality. The more lime is used, the stronger the soil alkalinity, and the specific application amount should be flexibly controlled according to the degree of soil acidification.
4, sterilization, control of pests and diseases
For those places where ginger, peanuts, leeks, tomatoes, etc., especially for greenhouses or protected areas, long-term planting of flails will continue to accumulate germs, eggs and pests in the field soil (for example, let the vast majority Root-worm, blight, virus disease, soil-borne diseases, etc., which are common headaches for farmers, directly cause the farmers to grow more crops, the lower the yield and quality, the more serious the crops, the more serious the crops, and even the crops. Due to serious root rot, dead tree, or even failure!
Applying an appropriate amount of quicklime to the soil can be very effective in disinfecting and reducing pests and diseases. After the lime is applied to the soil, on the one hand, a large amount of heat is rapidly released during the ripening process, so that the soil temperature rapidly rises in a short period of time, and the various pathogens, eggs and pests in the soil can be quickly killed and reduced. The breeding base of pests and diseases effectively controls the occurrence of various pests and diseases represented by soil-borne diseases and root-worms; on the other hand, most of the diseases of the crops are caused by harmful fungi, and acidic soils are the breeding ground for harmful fungi. Quicklime can reconcile the pH of the soil, and increase and promote the number and activities of beneficial microbes in the soil (the harmful bacteria and beneficial bacteria are opposite each other, one side increases, the other side decreases), which can significantly reduce the number of harmful bacteria. To reduce the occurrence of various crop diseases such as clubroot disease and blight. This has a very significant effect on the planting sites and vegetable growing sites, and the filming effect will be better.
5. Activate soil and cultivate soil fertility
Calcium hydroxide produced by the production of quicklime in the soil helps soil viscosity, soil aggregate formation, soil water retention and permeability improvement, and also promotes soil structure optimization, rational decomposition of organic matter, and humus. Increase and alleviate soil compaction, increase beneficial microbial bacteria, achieve better development of crop roots, and better absorb soil nutrients, all of which can make crops grow better, yield higher, and better quality!
6, reduce the humidity in the field
Quicklime has strong water absorption. For greenhouses with excessive humidity, applying proper amount of quicklime can absorb the moisture in the shed and reduce the humidity environment of the crops in the shed, especially in the crop period, which can reduce the moisture of the fruit. The content promotes the absorption of calcium by the fruit and reduces the occurrence of problems such as deformed fruit and cracked fruit.
Second, how to properly use quicklime to promote crop planting?
1. The amount of use should be determined flexibly according to the pH value of the soil. Generally speaking, neutral weakly acidic plots can be 50-80 kg, lightly acidic soils can be applied about 80-100 kg per mu, and heavy acidic soils can be applied about 200 kg per mu. The pH of the soil should be checked before use. The acid soil should be used best. The neutral soil and the plot with pH above 7.5 should not be used again. In case the excessive use of the soil causes excessive alkalization and compaction of the soil, the trace elements are Fixation, which has an adverse effect on the root absorption of crops, is prone to deficiency.
2. When using quicklime, the surface should be evenly spread and then applied to the soil by deep tillage to ensure the full effect.
3. Quicklime uses less impurities, no agglomeration, and good purity. High-quality quicklime is all white, with white powder on the surface, and poor quality quicklime is usually light gray or light yellow because it contains impurities.
4. The quicklime is best used now. It should be sealed and stored once it is used. The effect of quicklime after rain or wet water will be greatly reduced. It is not recommended.
5, quicklime can not be used together with unfertilized farmyard manure or organic fertilizer, and can not be used with phosphate fertilizer, you can use organic fertilizer and phosphate fertilizer after 5-7 days after using quicklime.
6. Quicklime not only kills harmful bacteria in the soil, but also kills beneficial bacteria at the same time as the target. Therefore, after using lime for several days, it is better to replenish the bio-fertilizer/agent to increase the amount of soil in the soil. Beneficial microbial flora.
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