Plant extracts refer to substances extracted or processed from plants (all or a part of plants) using appropriate solvents or methods, and can be used in the pharmaceutical industry, food industry, daily chemical industry and other industries.
There is a conceptual overlap between plant extracts and herbal extracts. The raw materials of plant extracts in my country are mainly derived from Chinese herbal medicines, so domestic plant extracts can also be called Chinese medicine extracts to some extent.
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First, the root calcium
Calcium supplements from the roots of apple trees are used to supplement calcium. Root calcium is very important, because the root absorption effect is often the best, is the basis for the entire calcium, but also to solve the apple due to calcium deficiency caused a variety of physiological diseases, the key measures.
1. Concept and role of basal fertilizer Basal fertilizer refers to the fertilizer applied in combination with soil tillage before sowing or planting. In the technology of calcium supplementation by apples, Shiji fertilizer refers to the one-time application of fertilizers to soil in the period from early September to mid-October each year. During the period from early September to mid-October, the fruit has just been harvested, and the next fruit's growth and development will not begin until the second spring. Therefore, this period is the rest period of the fruit tree, adding some calcium to the base fertilizer. , can allow fruit trees to benefit from the whole year.
2, Shiji Fei operation base fertilizer to try to increase a variety of cooked organic fertilizer, such as chicken manure, pig manure. The application of organic fertilizer can improve soil and fertility, and can provide a balanced and long-term supply of various nutrients needed for fruit trees, especially trace elements, which is an important material basis for achieving high yield and stable yield of fruit trees. 1 Dig trenches before fertilizing. Trenching is also exquisite. Wherever the general canopy grows, where is the most common method of digging is digging. The so-called vertical excavation is to dig along the side of the tree body longitudinally, and the ditch beside each tree is to be connected. You don't need to dig too deep, just expose the hair roots. Generally sandy loam can be digged 40 cm wide and 50 cm deep. In the same way, a ditch is dug on the other side of the fruit tree. 2 After fertilizing, you can fertilize it. Pour the fertilizer into the ditch, spread the fertilizer evenly with a shovel, and then cover it with the soil, and finally pave the surroundings. 3 The amount of fertilizer needs to be calculated based on the previous year's apple yield. The general standard is the amount of kg of fruit and fertilizer. However, in recent years, as people's demands for the quality and yield of fruits have become higher and higher, the current fertilization standards are mostly for each production. 500 grams of apples were applied with 1000 grams of high quality organic fertilizer. 4 When basal fertilizer is applied, some calcium-containing substances can be added to the organic fertilizer. For example, the egg shells can be crushed and incorporated into fertilizers to achieve the effect of calcium supplementation.
Second, leaf spray calcium
Calcium, also called extra-root calcium supplementation, is an emerging technology for calcium supplements by fruit growers in recent years. It is a calcium supplement that evenly sprays calcium on leaves and fruits. Calcium spray should be carried out in the best period of fruit and fruit absorption of calcium in order to achieve good results.
During the year, there are two peak periods for calcium absorption by apple trees: the first time within 30 days after flowering, the fruit can accumulate 90% of total calcium; the second time is 30 to 40 days before harvesting. It is a bagging of apples. This is the time just when the bag is removed. Take advantage of this opportunity to spray calcium on the leaves. The fruit itself can also absorb it and enhance the absorption of calcium. In addition, calcium supplementation is performed 30-40 days before harvesting. The calcium absorbed by the fruit trees can be stored in the tree, and can be reused in the spring of next year to supply young shoots with young fruit. If calcium is missed in these two periods, the effect will be affected. Calcium is commonly used calcium calcium carbonate amino acid solution:
1. The amino acid calcium itself is a high protein hydrolysate and can give the best nutrition to the plant. Before the spraying, it should be diluted with 1000 times of water. At this time, you can also add boron fertilizer with a concentration of 0.3%, which can promote the absorption of apple tree calcium. Usually, spraying 1-2 times 30 days after flowering and 30 days before fruit picking has the best effect.
Apple tree calcium supplement method
Apple calcium supplementation technology according to the site of calcium absorption can be roughly divided into: root calcium, calcium spray, fruit tree calcium, fruit calcium leaching 4 content.