1. Characteristics of strawberry botany
The strawberry belongs to the genus Rosaceae, which is a perennial evergreen plant with shallow roots, large leaf transpiration, high water requirements, and poor drought tolerance. Therefore, soil moisture is required throughout the growing season, and sufficient light is required for development of strawberry fruit. Strawberry fruit is about 2-3 years old. It is a small berry with fast results, early maturation, easy propagation, short cycle, less pests and diseases, easy handling and high nutritional value. It is especially suitable for protective cultivation.
Strawberry roots are distributed shallowly in the soil, mainly in soil layers 20 cm deep from the surface, and a small amount of roots can reach soil layers below 40 cm. Therefore, strawberry planting, fertilization, etc. are shallow.
Strawberry stems are divided into three types: new stem, rhizome and stolon. Among them, the stolon is the vegetative organ of strawberry. Each plant can grow more than 10 barn stalks, and each mother plant usually produces 30-50 shoots. However, due to the occurrence of different types of shoots, the size of the seedlings varies from one to the next. The size of the seedlings first occurs and they are close to the mother plant; The closer to the mother plant, the earlier the formation of the growth of the stem plantlets, the better, after the planting can form a large number of flower buds, the second year of flowering results.
Second, strawberry mulching technology
1. Choose the best lighting conditions, drainage and irrigation is convenient, earthy fluffy, fertile, water and soil conservation and good fertility is appropriate. For the former crops, potato, beans, wheat, corn, and cereals are preferred, and land for solanaceous vegetables should not be used as a strawberry garden.
2. Precise soil preparation. Before the planting of basal fertilizer, the land shall be sown with about 30 centimeters of deep sun, ridged and soiled, weeds removed, and fully crushed soil. The width of the ridge is 40 cm, height is 20-25 cm, and the ditch width is 30-35 cm. The length can be determined according to the topography. The farmyard manure per acre is 1500-2000 kilograms, or the same amount of waste manure plus compound fertilizer 20-30. Kg, 50 kg of superphosphate, 10-15 kg of potassium sulfate or potassium chloride, 100 kg of fermented rapeseed cake (preferably made with farmyard manure). In the middle of the trench, spread the trench, spread it evenly in the trench, mix it well with the soil, and cover it with topsoil.
3, planting and planting selected leaf color green, stem thick, with 4-5 leaves, intact root disease-free plant. Qingyang City is planted between mid-August and mid-September. Take a double row arrangement, spacing 20-25 cm, spacing 20 cm, 5000 plants per acre. The depth of planting is best to plant roots in shallow depths. After planting, rooting water is poured.
4, timely fertilizer planted about 20 days after the strawberry seedlings grow new leaves, thin application of human waste water, or 0.5 kg of urea per mu, superphosphate 0.5 kg, 100 grams of potassium dihydrogen phosphate, watered pouring. After every 15 days or so, topdressing once, topdressing 2-3 times, the amount of fertilizer was increased by 150-200 grams from the previous time, and acupuncture methods were adopted to promote the root system to accumulate more nutrients. The top-dressing fertilizer can be used as a spray in the foliar fertilizers such as potassium dihydrogen phosphate, foliar seedlings, love-yielding, green-wang, and auxin during budding and early flowering, and is selected every 710 days thereafter. A spray once to enhance plant and fruit growth and development.
5, covering the role of plastic film cover First, to extend the growth period after the fall, and the second is to keep warm, ensure the safety of strawberry plants overwintering. Film thickness of more than 0.01 mm, the best selection of black plastic film, covering the film in early October. At both ends of the ridge, the mulch film is tightened and fixed. Afterwards, the mulch film is peeled off at the position of the plant, the plant is led out of the film, and the soil is compacted on both sides. Before weeding, weeding and weeding with 2.5kg of lime powder per acre is applied to the ridge surface to effectively prevent the occurrence of powdery mildew.
6, the management of strawberry in winter is shallow, easy to suffer freezing injury. After the soil is frozen, crop stalks can be covered on the surface of the ridge to prevent freezing. After the spring of the second year, remove the cover in time.
7, water management Strawberry hi water, afraid of earthworms, from flowering to fruition, must have sufficient water, ability to ensure the needs of its fruit growth and development. The mulch-covered garden must be irrigated and watered every few days to keep the soil moist.
8, thinning and fruiting fruit strawberry first inflorescence stout stout, large results, late high-level inflorescences slender, small results, should be promptly removed high-level inflorescence and incomplete development of ineffective flowers. The buds that the plant grows usually retain 1-2 of the first ones, and the rest should be removed promptly. The seedlings of the plants are continuously pumped and removed in time. The old leaves, diseased leaves, and overgrown leaves in the lower part of the plant are removed and destroyed.
9. Diseases and Insect Pests Control Common diseases of strawberries include gray mold, powdery mildew, leaf spot, etc. The insects include spider mites and aphids. According to the occurrence situation, choose suitable high-effective low-residue pesticides for timely prevention and control. Pay special attention to the drug concentration and the safe period for the consumption of strawberry fruit.
10. Harvest When the strawberry fruit turns red, when the colored surface is above 80%, it should be timely harvested. Lightly pick and lightly when fruit is picked. Packaging (available foam boxes or transparent plastic boxes of different specifications, large packaging should not exceed 10 kg of fruit) listed.
Many people may have heard of the AHD Four in One Cameras/ AHD Camera/ AHD Cameras/ AHD Camera CCTV/ AHD HD Camera/ Analog Camera/ Analog Camera CCTV, so what are the AHD Four in One Cameras? Let me introduce to you in details.
AHD means Analog High Definition. The AHD camera/AHD Four in One Cameras is an analog high-definition camera, and its transmission signal is a high-definition analog signal; which means that the AHD camera, based on the AHD protocol, progressively scanned high-definition video, by analoging the transmission of the coaxial cable.
The AHD technology can realize the reliable ultra-long distance(500 meters) transmission of the high-definition video signals without changing the existing analog transmission lines. The AHD technology adopts the advanced Y/C signal separation and analog filtering technology, which can effectively reduce color noise in the high-frequency area, and make the image restoration better. Compared with the traditional analog high-definition products, the monitoring image quality of the AHD camera has a great improvement, and the highest definition can be equivalent to the full HD level of the network HD 1080P.
AHD follows the path and method of the Analog Standard Definition transmission, which can reduce the complexity of the construction and deployment, the cost and the maintenance complexity of the the auxiliary materials, and the technical requirements for construction personnel. The AHD technology is very suitable for the upgrade and transformation of the old system, because it can easily upgrade the standard definition to the high definition without changing the original system. In addition, The AHD Camera can reach the high-definition quality at the standard-definition price, which has created a lot of demand in both the civil and the industrial markets.
Let me introduce some advantages of the AHD Four in One Cameras as follows:
1. Clearer: advanced bright color separation, signal filtering, 3D noise reduction technology, higher image clarity, better image restoration.
2. Long transmission: the coaxial transmission common 75-5 line can reach 500 meters.
3. No delay: the front-end data of the AHD Four in One Cameras without encoding will be directly compressed and delivered to the back-end DVR, which makes the video full real-time and high-fidelity.
4. Good compatibility: compatible with the ordinary D1/960H, the analog peripheral equipment (including the distributors, the matrixes, etc.).
5. Easy to operate: support the OSD menu design, you can set what you need and want.
6. Good quality and low price: ordinary analog price, but high-definition quality product.
7. High integration: AHD front-end chip price, high-definition quality products.
8. Open standards: the third-party open standards, compatible with other manufacturers` AHD products; which can accelerate the market advancement.
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