New technologies for sweet orange flower and fruit management are as follows:
1. Trim carefully. Cut off the damaged dry and dead branches and leaves as soon as possible to reduce the water transpiration of the tree and prevent the continued dead branches. After spring, before budding, conduct comprehensive pruning. Cut off disease and insect branches, leafless weak branches and shade covered branches. After trimming, the wound shall be coated with grease "callus anti-corrosion film" in time to prevent the wound from cracking and disease invasion cannabis grow rack.
2. Strengthen fertilizer and water management. For sweet orange trees with many fallen leaves, a small amount of topdressing should be applied for many times. For trees with less flowers, the amount of nitrogen fertilizer in front of the shoot should be strictly controlled. Foliar fertilization should be paid attention to in sweet orange orchards with damaged roots in drought. During flowering and shoot growth, spray 0.2% ~ 0.3% potassium dihydrogen phosphate and 0.3% urea mixture every 7 to 10 days for 2 to 3 times. At the same time, boron, zinc, iron, manganese, magnesium and other trace elements should be supplemented.
4. Protect flowers and fruits, and promote the new technology of pollution-free shoot control and fruit protection. In production, the cationic active agent "promoting huawang 2" is widely used to improve the fruit setting rate of sweet orange, improve the photosynthetic function of old leaves, promote the green transformation of new leaves in advance, alleviate nutritional contradictions and reduce flower and fruit drop. Spraying "guaguozhuangdiling" before and after flowering and expansion stage can improve the fruit expansion rate and protect flowers and fruits.
5. Erase the late autumn shoots. It is beneficial to fruit sugar accumulation, improve quality and reduce pest damage.
6. Young trees promote flowers. Before and after the middle of August, the young trees with a crown diameter of more than 1.0m shall be pulled and reshaped. The shaping is mainly natural open center shape. The pulling angle shall be 45-60 degrees with the main rod. The angle shall not be too large. It is strictly prohibited to pull into sagging branches.
7. Strengthen nitrogen control and quality assurance in the later stage of fruit. The fruit quality of sweet orange has the greatest influence on tree potential in the later stage. With more nitrogen and vigorous trees, most photosynthetic products are transformed into growth function, while the fruits are coarse skinned, large fruit, green skin, color difference, low fruit juice content, less soluble sugar and poor quality vertical rack system.
The adjustment measures are to control the amount of nitrogen application first, followed by topdressing, early application, auxiliary ring cutting measures, and apply "promoting huawang 2", which is beneficial to control the tree potential, so as to promote coloring, increase sugar and reduce acid, mature in time and improve the fruit quality.
8. Pre harvest fruit drop and pest control
Pre harvest fruit drop of sweet orange is often accompanied by insect injury, brown rot and infection of Penicillium and chloromycetes, and navel orange is also accompanied by fruit cracking. Therefore, in order to prevent pre harvest fruit drop, fungicide plus "Gaoxin lipid film" should be sprayed in combination with disease control, and diseases and pests should be manually picked up and destroyed, so as to reduce the source of re infection in the orchard.
Set up the indoor garden before introducing plants.Construction requires space and planning.An indoor garden under construction offers a terrible environment for plants.Once the garden is set up and operational,it will be ready for plants.Step One:Choose an out-of-the-way space with little or no traffic.A corner of the basement or a spare bedroom is perfect.A 1000-watt HID,properly set up,will efficiently illuminate up to a 6×6-foot(1.8×1.8) room.The ceiling should be at least five feet(1.5m) high.Keep in mind that plants in containers are set up at least one foot(30cm) off the ground,and the lamp needs about a foot (30cm) of space to hang from the ceiling.This leaves only three feet (90cm) of space for plants to grow.If forced to grow in an attic or basement with a low four-foot (120cm) ceiling,much can be done to compensate for the loss of height,including taking cuttings,bending,pruning,and using smaller wattage lamps.Step Two:Enclose the room,if not already enclosed.Remove everything that does not pertain to the garden.Furniture,drapes,and curtains may harbor fungi.An enclosed room allows easy,precise control of everything and everyone that enters or exits,as well as what goes on inside.For most gardeners,,enclosing the indoor garden is simply a matter of tacking up some plywood or fabricating plastic walls in the basement or attic and painting the room flat white.Step Three:Cover walls,ceiling,floor--everything--with a highly reflective material like flat white paint or Mylar.The more reflection,the more light energy available to plants.Good reflective light will allow effective coverage of an HID lamp to increase from 10 to 20 percent,just by putting a few dollars worth of paint on the walls.Reflective white Visqueen plastic is inexpensive and protects walls and floors.Step Four:Constant air circulation and a supply of fresh air are essential but often inadequate.There should be at least one fresh-air vent in every indoor garden.Vents can be an open door,window,or duct vented to the outside.An exhausts fan vented outdoors or pulling new air through an open door usually creates an adequate flow of air.An oscillating fan works well to circulate air.When installing such a fan,make sure it is not set in a fixed position and blowing too hard on tender plants.It could cause windburn and dry out plants,especially seedlings and cuttings.If the room contains a heat vent,,it maybe opened to supply extra heat or air circulation.Step Five:The larger your garden becomes,the more water it will need.A 10×10-foot (3×3m) garden could use more than 50 gallon (3.8L) of water weighs eight pounds (3.6 kg);50×8=400 pounds (180 kg) of water a week!It is much easier to run in a hose with an on/off valve or install a hose bib in the room than to schlep water.A three-foot (90 cm) watering wand attached to the hose on/off value makes watering easier and saves branches from being broken when watering in dense foliage.Hook up the hose to a hot and cold water source so the temperature is easy to regulate.Step Six:Ideally,the floor should be concrete or a smooth surface that can be swept and washed down.A floor drain is very handy.In indoor gardens with carpet or wood floors,a large,white painter’s drop cloth or thick,white Visqueen plastic will protect floors from moisture.Trays placed beneath each container add protection and convenience.Step Seven:Mount a hook strong enough to support 30 pounds ( 14 g) for each lamp.Attach an adjustable chain or cord and pulley between the ceiling hook and the lamp fixture.The adjustable connection makes it easy to keep the lamp at the proper distance from plants and up out of the way during maintenance.Step Eight:There are some tools an indoor gardener must have and a few extra tools that make indoor horticulture more precise and cost effective.The extra tools help make the garden so efficient that they pay for themselves in a few weeks.Procure all the tools before bringing plants into the room.If the tools are there when needed,chances are they will be put to use.A hygrometer is a good example.If plants show signs of slow,sickly growth due to high humidity,most gardeners will not identify the exact cause right away.They will wait and guess,wait and guess,and maybe figure it out before a fungus attacks and the plant dies.When a hygrometer is installed before plants are brought into the indoor garden,the horticulturist will know from the start when the humidity is too high and causing sickly growth.Step Nine:Setting Up the HID LampStep Ten:Move seedlings and rooted cuttings into the room.Huddle them closely together under the lamp.Make sure the HID is not so close to small plants that it burns their leaves.Position 400-watt lamps 18 inches (45 cm) above seedlings and cuttings.Place a 600-watt lamp 24 inches (60 cm) away and a 1000-watt lamp 30 inches (75 cm) away.Check the distance daily.Hang a precut string from the hood to measure distance.
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