For various crops, calcium and nitrogen, phosphorus, zinc together known as the root system to absorb the most nutrients of the "four elements", it can be seen that the role of calcium can not be underestimated, calcium is one of the necessary medium elements of crops. In short, there is no calcium on the ground and underground.
Calcium is an essential nutrient for plants and has extremely important physiological functions. So why are crops deficient in calcium? Why do crops supplement calcium? Which calcium supplement is good? You need to know!
Zhongzheng Science and Technology Academy - Calcium
<h1 class="pgc-h-arrow-right" data-track="3" > first, the cause of calcium deficiency</h1>
Calcium is mainly through the capillary roots of the crop into the crop body, upward transport conduction, through transpiration to transport to various parts of the crop, while the leaf and fruit part of the transpiration effect is small, so it is easy to lack calcium; moreover, because of the poor mobility of calcium, it is easy to form calcium salt precipitation in the crop body, blocking vascular tissue, preventing calcium from entering the fruit. 5 Reasons for Calcium Deficiency in Crops?
Zhongzheng Science and Technology Academy - Calcium mobility is poor
First, high temperature and drought affect the absorption of calcium, which is an environmental problem;
Zhongzheng Science and Technology Academy - High temperature and dry weather
Second, the root system is weak and the absorption capacity is insufficient;
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Third, there is a real shortage in the soil, and the soil is deficient in calcium.
Fourth, the use of nitrogen fertilizer and potassium fertilizer exceeds the standard, ion antagonism, affecting calcium absorption;
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Fifth, the mobility of calcium is poor, the utilization rate is low, and the supplement cannot be absorbed.
<h1 class="pgc-h-arrow-right" data-track="12" >2. </h1>
1, such as citrus cracked fruit, citrus peel, apple bitter pox, tomato umbilical rot, etc., are symptoms caused by calcium deficiency!
Zhongzheng Science and Technology Academy - Calcium Deficiency
2. Improve the stability of pectin and reduce cracked fruits, especially in watermelons, melons, tomatoes and other vegetables that are easy to split fruits.
3. Improve the gloss and hardness of the fruit, and improve the storage and transportation resistance. Some tomato varieties have high hardness in the early stage and become soft in the later stage, and the difference between the same varieties is obvious, and the most critical place is that the calcium fertilizer is not enough.
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4, increase the accumulation and transportation of dry matter, increase production, improve quality.
5. Long-term attention to nitrogen, phosphorus and potassium fertilizers without paying attention to supplementing calcium fertilizers, the content of effective calcium in the soil has decreased.
6, cotton: new leaves can not be unfolded, young leaves curled, deformed, dead. In the early days of cotton, calcium-containing fertilizer can neutralize the oxalic acid secreted by cotton to form calcium oxalate and avoid the harm of cotton bollworms; spraying cotton bollworm eggs with phosphorus-containing fertilizer can make the egg shells hard so that they cannot hatch.
<h1 class="pgc-h-arrow-right" data-track="20" >4, which calcium supplement is good? </h1>
Calcium is an essential nutrient element of crops, the lack of calcium nutrition will cause crop resistance to decline, poor growth, serious and even some special physiological problems, resulting in crop yield and quality decline. Therefore, in production, it is necessary to give calcium to vegetables, especially melons and fruits, vegetables and fruit trees. However, the importance of calcium supplementation for field crops is often overlooked.
The correct calcium supplementation method is a combination of soil calcium supplementation and foliar calcium supplementation, which can solve both soil problems and the needs of tissues that are difficult to absorb calcium. Especially in acidic and sandy soils, the available calcium content is low, crops are prone to calcium deficiency problems, and soil calcium application is an important technical measure. Soil calcium can be applied with calcium, magnesium and phosphorus fertilizer, calcium superphosphate, calcium nitrate and so on.
Common foliar calcium fertilizers are roughly the following: sugar alcohol calcium fertilizer, amino acid calcium fertilizer, organic acid calcium fertilizer, EDTA chelated calcium fertilizer, calcium nitrate fertilizer, pure calcium fertilizer, etc., let's briefly introduce it:
1. Sugar alcohol calcium fertilizer:
Generally with xylitol, mannitol as the carrier, through the complexation technology and calcium ions combined, with the movement of sugar alcohol to carry calcium together, sugar alcohol calcium can barrel plant phloem mobile transport, so the calcium supplementation effect is relatively good, can basically solve the problem of plant calcium supplementation.
However, sugar alcohol calcium needs to rely on plant transpiration to absorb and move, so the general rainy weather effect will be affected, and it is generally recommended to use it early.
2. Amino acid calcium fertilizer:
Since amino acids are elements that can be directly absorbed and utilized by plants, the performance of this type of calcium fertilizer is relatively good after use.
3. Chelated calcium fertilizer of EDTA:
This kind of calcium fertilizer has high absorption and utilization, which can make the calcium fertilizer move freely in the plant body, which is similar to the nature of the amino acid organotitanium calcium fertilizer, but the cost is relatively high.
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4. Pure calcium fertilizer:
The general content of this type of calcium fertilizer can be more than 100g/L, the content is high, but if it is not combined with other carriers, the movement of calcium after general supplementation is relatively slow, the effect is relatively slow, if combined with sugar alcohol and other supplements will be better.
The above four major types of calcium fertilizers are common types of calcium fertilizers on the market at present, which can be solved in various periods of plant supplementation effect is very good, do not rely on plant transpiration to supplement calcium fertilizer, and the supplement effect of each period is Kodi calcium boron magnesium calcium fertilizer, because in practical application, plant boron deficiency will inhibit the absorption of calcium, so Cody calcium boron magnesium, in foliar calcium fertilizer, relatively better in various application scenarios.