The tea plant is dwarf and densely planted, which is a rapid and high-yield cultivation method. Practice has proved that dwarf dense planting can be put into production three years earlier than conventional cultivation, with high yield and rapid growth, and significant economic benefits. The main cultivation techniques are now introduced as follows:
First, the establishment of dwarf dense planting tea garden 1. Select the land. Where the soil layer is more than 1 meter, there is no iron-manganese hard layer, the pH value is between 4.5--5.5, the groundwater level is less than 1 meter, and the wasteland below 10 degrees can be built. The mature land is generally not as good as the wasteland. it is good. In order to avoid soil erosion, it is possible to build terraces with a width equal to the width of the ladder, and then use the ditch to make the tea. In order to avoid the damage of root-knot nematodes, 7.5 kg of 3% carbofuran granules per acre can be sprinkled on the broadcast frame before planting, and then the agent is mixed with 25 cm of the whole soil layer with iron shovel.
2, layered to apply the base fertilizer. After the land has been thoroughly flattened, it is possible to plan the cultivation of tea cultivars, which are 100--120 cm wide, and planted with 畦 layered base fertilizer. The amount of fertilizer per acre is 60--80 for pigs and cows, and 200-300 for cakes. Kilograms, calcium magnesium phosphate or superphosphate 50--60 kg, fire burning soil 20--30. Pigs and cows are applied to the soil layer of 30--40 cm deep. The other base fertilizers are mixed well first, 2/3 is applied to the soil layer at 20 cm, and the rest are applied to the upper layer of about 10 cm. It is worth noting that all organic fertilizers must be fermented before they can be applied, especially cake fertilizers.
3. Choose good varieties. The tea tree variety with dense planting, strong top end, plant erect, compact plant type, oblique leaf, strong germination and fast growth is selected.
4. Reasonable close planting. At present, more dense planting methods are used: 1 large row spacing of 1.5 meters, small row spacing of 33 centimeters, plexus spacing (hole spacing) of 20 centimeters, 2 to 3 plants per cluster, and 6667 clusters per acre 15000--20000 Strain, commonly known as three dense planting method; 2 large row spacing 1.5 meters, small row spacing 26--30 cm, plexus distance 20 cm, each cluster of 2--3 plants, 8500 plexes per acre, 20000-25,000 plants, commonly known as four Close planting method. In the promotion and application, the water and fertilizer conditions can be better.
5. Strengthen the management of seedling stage. It is very important to improve the seedling survival rate in the seedling stage and increase the survival rate of tea seedlings. Newly planted tea seedlings, it is required to pour water every morning or evening in the sunny day, and weeding and weeding 4 times a year, that is, a cultivating and weeding before the spring tea in February-March, the depth is 10--15 cm; once in spring in mid-May Shallow ploughing, about 10 cm in depth; in the middle of July, a shallow ploughing after summer tea, the depth is 7-8 cm; after the end of autumn tea, a deep cultivating is carried out in combination with the base fertilizer, the depth is 15-25 cm.
Second, the management of dense planting tea garden 1, scientific fertilization. Tea trees in densely planted tea gardens are usually 6-8 times more than conventional tea gardens, and 20-30 times higher in density. It is necessary to start production early and yield high, and it is necessary to increase the amount of fertilizer. Usually, a full-age tea garden employs 25 kg of urea, 60 kg of two-legged age, 75 kg of three-legged age, 90 kg of four-legged age, and 100 kg after five-week age. Nitrogen, phosphorus and potassium are applied at 3:1:1, and each 50 kg of dry tea is guaranteed to be 7-8 kg of pure nitrogen. As the yield increases, the amount of nitrogen fertilizer will increase (nitrogen, phosphorus, potassium 4--6:1:1). The base fertilizer is applied once a year, 150-200 kilograms of cake fertilizer, 20--30 tons of fire-burning soil, applied in the middle of November-December, and the topdressing (urea) is applied on average in the middle of March, May and July. After rebuilding the soil after the ditch, it is best to fertilize before the rain.
2, low trim. The yield composition of the dense planting tea garden mainly depends on the top advantage of the individual, with more buds and stronger buds. Reduce the trimming site, make the tree dwarf, shorten the transport distance of water and nutrients in the body, and promote the growth of the top bud, which is the purpose of dwarfing. Therefore, in the second year of the second year after planting, when the average height of the seedlings exceeds 20 cm, the upper branches and leaves are cut off 15 cm from the ground. From July to August of this year, the average seedling height should exceed 40 cm on average. You can pick some fresh leaves first and then cut them at 30 cm. Due to the strong growth of young tea trees, if the seedling height averages 50 cm in the third year of March of the third year, it can be cut flat at 40 cm. After the tea tree has been trimmed and trimmed three times, it is only necessary to carry out a light shear of 2--3 cm on the canopy surface in early March every year.
3. Picking in batches. It is not enough to control the height of densely planted dwarf tea trees by trimming. It is also necessary to carry out multiple picking and extension picking periods in batches. Tea trees should pay attention to harvesting and staying in the early years, so as to improve the conditions for yield production as soon as possible. Therefore, after the first pruning of the tea tree, when the tree is as high as 40 cm, the topping is one bud and one leaf, and the height is not new. It is not taken, it is taken every 3 to 4 days, and 4--5 is repeatedly picked to control the height. By the end of the year, the tree height is 40-45 cm. After the second trimming of the tea tree, the spring buds can be left with 3--4 leaves, the summer tea leaves 2 leaves, the autumn tea leaves 1 leaf, and the tree height is 45--50 cm at the end of the year. After the tea tree has been trimmed 40 cm from the ground for the third time, the spring tea leaves 2 leaves, the summer tea leaves 1 leaf, the autumn tea leaves the fish leaves, and the year-end tree height is kept at 50 cm. The four-year-old tea tree is lightly cut once in spring, and the spring tea can be left for 1 leaf picking. The summer and autumn teas are all kept with fish leaves, and the year-end tree height is about 55 cm. During the picking period, the general rain was exploited, and the park was closed one week before the frost.
About high speed Door Accessories:
1.Driving system: High Speed Door Servo System motor and control, motor SNMA / SEJ +reducer+flang+encoder+control box
2.Other accessories: Middle aluminium bar, bottom aluminium bar, aluminium vertical track, stainless steel vertical track, brushes,round nylon strip, PVC roll, rolling steel tube complete, drum be;;s for rolling tube, side end covers, stainless steel cover, steel tubes, air bag sensor system, safety light beam, Microwave sensor 24 Gigahertz,PVC welding machine, smoke and fire sensors, PVC transparent window, magnetic loop, photocell, remote control, manual push button, sound warning alarm Led lamp traffic light
For some main accessories, here is detain introduction:
1).24G radar sensor:
Brand: Hofic
Technology: Microwave processor
Maintain time: 0.5s
Protection: IP54
Transmitting frequency: 24.125GHz
Maximum installation height: <5meter
Transmitting power density: <5mw/cm2
Power consumption: <1W(VA)
Installation angle: 0-90°(lengthways) -30-30°(crosswise)
Supply voltage: AC&DC 12V-30V
2).Photocell:
Approval CE & ISO9001
Power supply AC/DC 12-30V
Static current 25A
Action current 40mA
Mounting distance Max 10m
NO or NC contact Done by NO./NC. contact selection
Working environment temperature -42℃ to +45℃
Working environment humidity 10 to 90%RH
Appearance dimensions( controller) 123*50*32mm(L*W*H)
Appearance dimensions(Magic eye head) 19*13mm(L*D)
3). Remote control
Operating Voltage: AC220V/50HZ+-20%
Transmit power:≤100mW;Super regenerative module, strong anti-interference
Operating temperature:-30℃-+70℃
Working frequency: 433MHZ;transmitter 1527, millions of encoding chip
Accept sensitivity:≤110dB
Manipulation method: electric remote control
Configure the quantity: Wireless number; factory configuration transmitter two. Can be equipped with PT2272 digital decoder chip
Configure the function: Up, down, stop, anti-lock full-featured reproduction
4). Magnetic loop
Voltage: 12V AC/DC +-10% 24V 115V AC+-10% 230V
Power: <2VA
Continued electrical output: 7A / 250V AC
Frequency range: 20 to 200K Hz
Response time: infinity (factory setting) or adjust maintain time
Sensitivity: 0.01% to 0.1% divided into 3 levels
Protection level: IP30
Electromagnetic compatibility (EMC) Complies with EM50081-1 and EN50082-2
Detection loop inductance: the limit of 40uH to 100uH ideal value 80uH to 300uH
Operating temperature: -25 ℃ to 70 ℃
Storage temperature: -40 ℃ to 85 ℃
Relative humidity: <90% non-condensing
Temperature compensation: automatic compensation up to 50 ℃ / h
Connection type: 11 pin DIN rail socket
Dimensions: 41 * 78 * 85 mm (width * height * length)
Weight: 250 grams
5). manual push button
This exit switch button is made of ABS and has built-in indicator light make it looks more elegant and fashionbale. It can be widely used in public entrance gates, public door, home, office, hotel, etc.
Door Exit Button Push To Exit Switch Door Opener For Access Control Security
Main Feature
Fashionable appearance
Made of ABS Plastic
Easy to install and operate
Used for access control
Specification
Mechanical Life: 500,000 test
Material: Plastic
6). Limit switch encoder
Voltage: DC5V-24V
Output voltage: high voltage≥85%Vcc, low voltage≤0.5V
Maximum mechanical speed:6000rpm
Anti-vibration: 50m/s,10-200HZ,XYZeach way 2 times.
Current consumption:≤30mA
Response frequency: 0-100KHZ
Protection: waterproof,oil proof,dust prevention, IP54
The output code system: binary code
Operating life: MTBF≥30000(+25℃,2000rpm)
Rotational inertia:4.0x10-8kgm²
Maximum load:radial direction20N
Axial direction:10N
Weight: about 0.4kg
High Speed Door Accessories,High Speed Door,Electronic High Speed Door Accessories
Shenzhen Hongfa Automatic Door Co., Ltd. , https://www.hffastdoor.com