Melon burnt flower has always been a hazard of loofah cultivation, because the loofah burnt flower directly affects the sales of loofah, and it is also a matter that growers want to avoid. Different symptoms have different treatment methods. Next, we introduce several common ones. Solution to the symptoms of loofah burnt flowers:
First, the symptoms:
1. With the decay of the flower, the stigma of the flower appears black rot.
This may be due to the lack of factors such as boron and calcium in the soil, and also related to poor root absorption or uncoordinated water supply.
Foliar application of foliar fertilizers containing elements such as boron and calcium, such as Jiamei brain white gold, gold boron, etc., can also be applied to Jiamei profit, Hailibao, etc., and must pay attention to rooting and enhance the absorption capacity of roots. You can add 800 times of liquid Jiamei dividend, or use one of the drugs such as methyl thiophanate, carbendazim, ethylphosphonium, aluminum, manganese and zinc, and then add 800 times of liquid Jiamei dividend to fill the roots, each plant is about 0.25 kg.
2, the edge of the petals appear dry, dry (different from water burnt flowers), the entire petals are not fresh.
Condition analysis: This may be a symptom of phytotoxicity or blight on the flower. Blight is more severe in the case of low light, especially after a cloudy day.
It can be sprayed with drugs such as methyl thiophanate or Dasheng or Shi Baogong to reduce the occurrence of diseases.
3, from the edge of the petal began to appear watery, severely, the petals appear dripping symptoms, sometimes smelly, sometimes there is no white mold.
The case of odorous but not long hair may be bacterial soft rot, which may be flower rot or plague, both of which are heavier in the case of high temperature and high humidity.
Bacterial soft rot can be sprayed with streptomycin, norfloxacin, neomycin, etc., and can also be sprayed with copper preparations such as chlorpyrifos or crown bacillus. Flower rot and plague can be sprayed with sera, Kejia, Anke, Redomier, etc., or some agents can be added to the anthers.
Second, prevention measures:
1. Proportion and concentration of anthers
The scented medicinal preparations are generally based on the medicinal herbs, naphthaleneacetic acid and 2,4-D, and are combined with an appropriate amount of nutrient solution and an agent for controlling gray mold to carry out scenting, which can effectively prevent burnt flowers.
2, smoking method to prevent burnt flowers
The smoking method is a method to control the burnt flower of loofah. Usually 3-4 days after the flowering is a critical period for the occurrence of burnt flowers, and it is also the best time for smoke control to prevent burnt flowers. It can be used alternately with procymidone and chlorothalonil. It can also be used for control by sclerotia, but the amount of sclerotia should not be too large to avoid phytotoxicity and affect the development of plants and fruits. Generally, 200 grams of sclerotia per acre can be used, and the time of fumigation is preferably controlled within 8 hours.
3, spraying drugs to prevent loofah burnt flowers
The hair style is mostly caused by boron deficiency and calcium. It should be solved by spraying 800 times of Jiamei brain white gold and gold boron before the flowering of the loofah. The smell of water and odor should be bacterial soft rot, which can be sprayed with DT500 times and streptomycin 3000 times. Flowers should be dry and have small black spots should be blight, can be controlled by methyl thiophanate or Dasheng or Shi Baogong.
4, to prevent phytotoxicity injury
Loofah flowers are delicate, improper spraying may cause damage to the flowers, resulting in transparent white spots, reducing the price of loofah. When spraying at the flowering stage, it is necessary to pay attention to the selection of safe medicines, and the concentration of the spray should be used according to the instructions. Do not increase the concentration of the medicine at will, so as to avoid phytotoxicity.
Aluminum Alloy Extrusion Profile Y Tube
YF offers A6061,A6063 and other series aluminum alloy extrusion profile Y tubes for printer and copier. The extrusion Aluminum Tubing can be shaped in almost any way desired. This provides unique construction and design possibilities, which is a good foundation for creating products that contribute to sustainable development.
1.Application: For printer and copier
2.Material: A6063, A6061, A3003 and other series alu alloy
3.Suface treatment: Anodizing, polishing, turning ,power coating, mill finish etc
4.Equipment: CNC ,extruding machine, cold drawn machine, heating oven, straightening machine, cutting machine
|
OD |
OD Tolerance |
ID Tolerance |
Roundness |
Straightness |
Circular run-out |
|
φ16-20 |
±0.02 |
±0.02 |
0.01↓ |
0.015↓ |
0.05↓ |
|
φ20-30 |
±0.02 |
±0.02 |
0.01↓ |
0.015↓ |
0.05↓ |
|
φ30-50 |
±0.05 |
±0.05 |
0.02↓ |
0.020↓ |
0.08↓ |
|
φ50-80 |
±0.15 |
±0.10 |
0.05↓ |
0.025↓ |
0.10↓ |
5. STANDARD PACKING:Wooden case/carton
6. Trade Terms
1) Payment: 30% T/T in advance, 70% balance pay before delivery. L/C at sight.
2) Delivery time: 20 days after deposit receiverd. If opening mould, plus 7-10 days.
3) Trade Term can be chosen depending on your requirements.
4) FOB Port: Shanghai
Extrusion Profile Y Tube,Aluminum Extrusions,Extrusion Aluminum Pipe Tube,Aluminium Profile Tube
Changzhou YiFei Machinery Co., Ltd. , https://www.yifeialu.com