Camellia hi ventilation environment, hi half-yin and half yang, hi grow in a warm and wet place. Its roots are not well developed, most afraid of direct sunlight in summer. To this end, to make Camellia safer over the summer, it should create a good growing environment for it. Shade: Shade is usually from mid-May to September. The shades are preferably reed curtains, and can also be made of sacks, stalks, straw, twigs or nylon bags. Cover it before 8am every day and remove it after 4pm to facilitate ventilation and light transmission. Moisturizing: Summer should be diligently watered to maintain a certain degree of humidity in the basin. Watering and moisturizing should master the principles of “three observations, two investigations, and subsequent wateringâ€. The third look is: a look at the top branches and leaves. If there is no bright color in the leaves, it indicates that there is a shortage of water. If the shoots are drooping, it indicates that the water shortage is serious. If the shoots are not drooping and the leaves are curled, it indicates that the water shortage is serious and there is a danger of death. Two to see basin soil. For example, white water has appeared on the surfaces of pots and soils, indicating that there is water shortage, such as not only whitish but also cracking, indicating that water shortage has occurred. Look at the situation of fallen leaves. If defoliation caused by non-pest causes is found around the pot, you should first consider whether it is water loss. The second investigation is: First, you can use your fingers to press the basin soil, such as basin soil soft, indicating that there is no shortage of water, such as basin soil is hard, indicating that there is no water. The second is to tap the wall with a finger, such as the real sound of a squeak, indicating that there is no shortage of water, such as the buzzing sound, indicating that there is no water. Watering should be done on the basis of the observation. If there is no shortage of water, it is not necessary to water or sprinkle some water on the leaves. The water should be poured and drenched until the pelvic floor drains water. For severe water shortages, the potted plants should first be moved to the damp place to cool down, and the water should be sprayed on the leaf surface until it is healthy and then poured with enough water. Never use cold water to water the roots of flowers directly at high temperatures to avoid damaging the root and causing death. Watering is usually best around 5pm. For potted plants that have been too wet for a long time, appropriate measures should be taken. If the plants are too small and the plants are small, the water absorption can not be completed, and the large basin can be replaced with a small basin. If the plant roots are rotten and necrotic, the necrotic parts should be cut off and replanted. If the water in the basin is caused by the small pelvic floor drainage hole, the drainage hole should be enlarged. Potty soil with heavy clay should be mixed with fine sand and so on. In addition, two bricks should be placed at the bottom of the basin for ventilation and drainage. In addition, fertilization should be controlled in the summer to prevent burnout of the root system. If it is really necessary to fertilize, you should master the principle of “rather light not rich, rather less not much, less poured many times†principle, fertilization time is better on cloudy days or after 5 pm. For diseases and insect pests in summer, the principle of combining prevention with prevention should be adopted. If you can do the above, Camellia can safely overtake the summer.
Starch-based Plastics
Thermoplastic starch is also called "non-structured starch", which can make the starch structure disordered and thermoplastic by certain methods. Starch molecules for polysaccharides molecular structure, containing a large number of hydroxyl, due to its intermolecular and intramolecular hydrogen bond action, so that its melting temperature is higher, and its decomposition temperature is lower than its melting temperature, so in the heat processing, starch molecules did not melt and first decomposed. The traditional mechanical processing method of plastic is mostly heat processing, so to make starch - based whole starch plastic needs to make natural starch thermoplastic. This thermoplasticity can be achieved by changing the crystalline structure inside starch molecules. Destroy intramolecular and intermolecular hydrogen bonds, disrupt the double helix crystal structure of starch molecules, which will reduce the melting temperature of starch and make it thermoplastic.
Starch-Based Plastics,Cellulose-Based Plastics,Protein-Based Plastics,Some Aliphatic Polyesters
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