At present, most of the production of persimmon trees is still laissez-faire, resulting in low and unsteady yields. The author investigated and analyzed the reasons for the low yield of persimmon trees, and proposed the following measures and methods for increasing production. I. Analysis of the reasons for the low yield of persimmon trees 1. Lack of fat and water The majority of persimmon trees are not fertilized or watered, and the nutrients in the soil are severely depleted, which affects the growth and development of the tree. It is easy to form large and small annual results. Due to insufficient nutrients, the yield is low. 2. Soil management Extensive soil hardening results in poor root growth, resulting in aging of the root system and weakening of the absorption capacity. Weeds in the persimmon garden are clustered with weeds, and nutrients are consumed by the weeds, resulting in reduced nutrition for the persimmon tree and low yield. 3. Decrease in Aging Results of Branches Currently, there is little pruning in the production of persimmon trees. Persimmon tree branches are only renewed on their own. The rate of regeneration is slow, and the aging phenomenon is serious. As a result, the ability of the results of branches is reduced, and the performance is low. 4. Damaged by pests Although persimmons are more resistant to pests and diseases, the damage of pests has not received due attention for a long time. In the production, it is affected by persimmon keratoses, persimmon anthracnose, persimmon powdery mildew, persimmon Persimmon tussock moths and other hazards affect the normal growth of persimmon trees, making it difficult to increase persimmon yield. Second, persimmon tree production measures and methods 1. Scale planting planting, increase management of persimmon garden, change the past to let the management of persimmon garden, is one of the most effective measures to increase persimmon production, while improving the efficiency of planting scale. 2. The increase of fertilizer, water, fertilizer and water supply is the basis of the results of persimmon trees, and it is also the material guarantee for stable production and increased production. First, apply basal fertilizer. After harvesting fruits in October each year, apply 15 to 150 kilograms, 0.5 to 5 kilograms, and 1.5 to 15 kilograms of planting fertilizer, calcium superphosphate, and herbal ash to each tree age, and stop growing after the shoots are planted. Before and after the fruit enlargement in August, each topdressing quick-impact fertilizer is applied to meet the nutrients required for the vigorous growth of the tree, prevent buds and fruit drop, increase fruit setting rate, increase yield, and topdressing urea 0.1-0.5 times per tree according to the tree size. Kilograms, watering in time while fertilizing, to meet the moisture required for the growth and development of persimmon trees, and increase production. 3. Ploughing soil Each spring and summer, crops are ploughed and sterilized to enhance root ventilation, ripen the soil, intercept rainwater, improve the efficiency of natural precipitation, and deep plowing in the rainy season, maintain loose soil, increase water storage performance in the rainy season, and deepen the beneficial root system. Growth, enhance root absorption, increase the ability to absorb fertilizers and water, and promote yield. 4. Timely updates of pruning persimmon flower buds are mainly flower buds and flower buds at the top. There are few flower buds at the rear, only long apical branches result, and the branches at the rear are poorly pruned. The results are timely updated and pruned. Retract to the rear preparation branches to promote the formation of fruiting results in the lower part, increase the number of effective results, and promote the improvement of yield. 5. Timely control of pests and diseases to reduce the risk of pests and diseases in spring remove shikidi in time, remove pathogenic control of keratoses, spray 5 bumeido lime sulfur before buds; prevent persimmon anthracnose, spraying in late April to late May 0.2 Mido lime sulfur kills pathogenic spores to prevent the infection of persimmon powdery mildew; May spray 50% phoxim 2500 to prevent and control persimmon tussock moths, spray 40% at a speed of 2,000 times to prevent scale insects, and spray 65% ​​manganese in June Zinc WP 800 times 1~2 times to control the infection and spread of angular spot, anthracnose and powdery mildew; in the winter, weeds, deciduous, dead branches and other pests are injurious, reducing the source of overwintering diseases and pests, prevention and control of vertical pests Lay the foundation.
Everything You Need To Know About LED Lighting
2.LED stands for light-emitting diode.
A diode is an electrical device or component with two electrodes (an anode and a cathode) through which electricity flows - characteristically in only one direction (in through the anode and out through the cathode). Diodes are generally made from semi-conductive materials such as silicon or selenium - substances that conduct electricity in some circumstances and not in others (e.g. at certain voltages, current levels, or light intensities).
2.It`s really simple actually, and very cheap to produce, which is why there was so much excitement when LED lights were first invented!
When a light-emitting diode (LED) has a voltage source connected with the positive side on the anode and the negative side on the cathode, current will flow (and light will be emitted, a condition known as forward bias). If the positive and negative ends of the voltage source were inversely connected (positive to the cathode and negative to the anode), current would not flow (a condition known as reverse bias). Forward bias allows current to flow through the LED and in so doing, emits light. Reverse bias prevents current from flowing through the LED (at least up until a certain point where it is unable to keep the current at bay - known as the peak inverse voltage - a point that if reached, will irreversibly damage the device).
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LEDs are a simple invention with huge potential to change the lighting industry for the better. Don`t know much about them? Here are three big things you need to know to get your feet under you:
1.What Does LED Stand For?
2.A light-emitting diode is a semiconductor device that emits visible light when an electrical current passes through it. It is essentially the opposite of a photo-voltaic cell (a device that converts visible light into electrical current).
Did You Know? There is a similar device to an LED called an IRED (Infrared Emitting Diode). Instead of visible light, IRED devices emit IR energy when electrical current is run through them.
1.How Do LED Lights Work?
The p-type and n-type materials are created by introducing the original material to atoms of another element. These new atoms replace some of the previously existing atoms and in so doing, alter the physical and chemical structure. The p-type materials are created using elements (such as boron) that have less valence electrons than the intrinsic material (oftentimes silicon). The n-type materials are created using elements (such as phosphorus) that have more valence electrons that the intrinsic material (oftentimes silicon). The net effect is the creation of a p-n junction with interesting and useful properties for electronic applications. What those properties are exactly depends mostly on the external voltage applied to the circuit (if any) and the direction of current (i.e. which side, the p-type or the n-type, is connected to the positive terminal and which is connected to the negative terminal).
Application of the Technical Details to LED Lighting: