A variety of diseases may occur during storage of citrus after storage. According to the main diseases of citrus during storage and their occurrence rules, the comprehensive prevention and control technology of citrus during storage period is proposed.
1. Spraying before harvesting: Spray 1-2 times of fungicides around 10 days before harvest to reduce the number of pathogens. Generally, it can spray 70% thiophanate-methyl WP 1200-1500 times or 50% carbendazim WP 1000 times.
2, timely harvest: storage of fruit, according to the length of the storage period, early harvest, fruit maturity is about 80%. Premature or late harvesting is not conducive to storage.
3. Reasonable picking: When harvesting citrus fruits, it is necessary to adhere to the “Top Ten Attentions†(ie, frost, dew, and rainwater are not harvested; yellow leaves are selected and picked in batches; nails must be cut or worn when picking fruits) Gloves, to prevent damage to the fruit, and first outside and inside, first down and then on, require the use of the complex cutting method, the fruit pedicle is cut flat, anti-scissor; the fruit basket must be placed in a soft object, gently take it; Fruits, slime and pests must be stacked separately, etc.), and the fruits should be protected from human and mechanical damage during harvesting, shipping and storage to prevent the invasion of the bacteria from the wound and reduce the incidence.
4, pharmaceutical treatment: timely treatment with medicine dipping fruit after harvesting, it is best to pick and pour fruit treatment, no more than 24 hours at the latest.
5, ventilation pre-storage: citrus preserved in anti-corrosion treatment should be placed in the ventilated warehouse for pre-storage, generally pre-storage for 5-7 days, in case of rain, can be extended to 10-12 days, usually dried with peel, fruit weight loss 3% -5% is the degree.
6. Sterilization of the reservoir: Before the fruit enters the warehouse, the warehouse should be fumigated. Each cubic meter is ignited with sulfur powder for 5-10 grams for 1-2 days or with formalin 40 times solution, 30-50 ml per cubic meter, sealed fumigation for 3-4 days, after the drug is dispersed, it can be stored. Storage. Control warehouse temperature and humidity. The temperature requires 3-4 degrees and the relative humidity is 80%-85%. And pay attention to proper ventilation.
7, single fruit packaging: storage is best to use agricultural PVC film single fruit packaging.
8, anti-corrosion preservation: commonly used preservatives are carbendazim (10%, 25%, 50% three dosage forms), thiophanate (25%, 50%, 70% three dosage forms); preservative is 2,4- d (synthetic plant growth regulator , the original powder is white, the processing dosage form has 2,4-d butyl ester, sodium salt and ammonium salt); the antiseptic preservative has the function of preservation and preservation, but can only be stored for a short time ( It is sold or eaten after the Spring Festival. The effect is good homemade carbendazim (or thiophanate) + 2,4-d butyl ester (or powder).
Color: Kempas heartwood is very light in color, usually white to light yellow. Kempas sapwood is more orange to red or reddish brown. Over time and with exposure to UV light, the floor will darken to a more reddish color.
Grain: The grain is interlocked and/or spiraled, and is generally rough.
Variations within Species and Grades: There is little variation within the species and grades.
Hardness/Janka: Kempas has a Janka Scale rating of 1,710, making it harder than most species used for hardwood flooring.
Dimensional Stability: This particular species of wood is not considered dimensionally stable, and is less stable than the traditional Northern Red Oak.
Sawing/Machining: Sawing and machining kempas is somewhat difficult because of hard deposits. It can dull and damage tools so it is important to be careful when working with kempas.
Sanding: Kempas is known to sand well.
Nailing: It may be difficult to nail because of how easily the wood may split.
Finishing: The coarse texture and acidic nature of the wood make finishing more difficult than some other species. It will need good filling to finish and polish well.
Availability: Limited availability.
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