Diagnosis and remedial measures of zinc deficiency seedlings in rice
First, the morphological characteristics. When zinc is deficient in zinc, the main veins are chlorotic, and the main veins are enlarged to yellow and white along the leaf margin. Finally, the whole leaves are brown, the plants are short, the tillers are small, and the roots are slowly stretched. When zinc is mildly deficient, a small amount of brown spots appear on the tillers and the old leaves of the base; when the zinc is severely deficient, the rice bushes are dwarfed, a reddish brown, and growth is inhibited. Zinc deficiency in rice, lighter production, and heavy death.
Second, the cause. The demand for zinc in rice is very small, and it is a trace element compared with nitrogen, phosphorus and potassium. Due to the long-term single application of chemical fertilizers, combined with soil erosion, zinc deficiency in many fields is becoming more and more obvious. Therefore, it should be taken seriously.
Third, prevention and control measures. Plant green manure and apply farmyard manure. When leveling the land, care should be taken to protect the topsoil because the amount of zinc in the topsoil is more than that of the below. Add zinc sulphate-based fertilizer, the dosage is generally about 1 kg per acre. Zinc is not easy to move in the soil, so zinc fertilizer should be applied under or next to the seed, and the surface application effect is poor. When applied, it can be mixed with physiological acid fertilizer, but avoid mixing with phosphate fertilizer.
The seeds were continuously soaked for 12 hours with a 0.1-0.2% zinc sulfate solution, and the roots were washed with a 1% zinc oxide suspension, and the effect was good. Zinc fertilizer can be sprayed at the 3-leaf stage of seedlings, 3-5 days before transplanting, and transplanted 5-7 days in the field. The spraying concentration is 0.1-0.2%, and spraying on rice leaves 2-3 times, generally Eliminate zinc deficiency symptoms.
Fixed knot fence, also called Field Fence, Farm Fence , Cattle Fence, horse Fence , steel deer fence, grassland fence, sheep and goat fence for grassland. It provides enough safety fencing for cattle sheep and horse, and also against fierce striking of cattle, horse, goats, and even wild deer. So, the knotted type staylock deer fence usually used as hunting fencing. Besides, staylock deer fence also is a good fencing material for grassland and farms.
Structures and Dimensions
Material: Heavy galvanized mild steel carbon wire with extremely high tensile strength, a green PVC coated finish or other treatment also offered.
Horizontal wires: 2.50mm, Tensile strength: 1200-1400 N/mm2;
Vertical wires: 2.50mm, Tensile strength: 820-970 N/mm2;
Node wires: 2.24mm, Tensile strength: 400-550 N/mm2;
Zinc coating: 230-350g/m2.
Also We have our own professional designers to meet any of your requirements
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Types |
Fence height (cm) |
Number of horizontal wires |
Distance of vertical wires (cm) |
Roll length |
|
FKF100/8/15 |
100 |
8 |
15 |
50m, 100m |
|
FKF100/8/30 |
100 |
8 |
30 |
50m, 100m |
|
FKF120/9/15 |
120 |
9 |
15 |
50m, 100m |
|
FKF120/9/30 |
120 |
9 |
30 |
50m, 100m |
|
FKF150/11/15 |
150 |
11 |
15 |
50m, 100m |
|
FKF150/11/30 |
150 |
11 |
30 |
50m, 100m |
|
FKF150/14/15 |
150 |
14 |
15 |
50m, 100m |
|
FKF160/20/15 |
160 |
20 |
15 |
50m, 100m |
|
FKF160/23/15 |
160 |
23 |
15 |
50m, 100m |
|
FKF180/13/15 |
180 |
13 |
15 |
50m, 100m |
|
FKF180/24/15 |
180 |
24 |
15 |
50m, 100m |
|
FKF200/18/15 |
200 |
18 |
15 |
50m, 100m |
|
FKF220/26/15 |
220 |
16 |
15 |
50m, 100m |
Advantages
Strong: The fixed knot structure with strong wire can withstand strong impacts.
Flexibility: The flexibility wires makes it to strong impacts, the mesh can return to its original position and maintaining its tension.
Long life: The triple galvanized provides high corrosion resistance, high durability and long life even in adverse conditions.
Easy install: Due to its high stiffness, it allows the posts every 7 meters, offering extraordinary savings in both material and installation time.
Wide range of applications: For wild cattle fences, horses fencing, big game hunting grounds, perimeter fencing, plantations fence, hunting fencing.
Galvanized standard: A high-wire base triple galvanized resistance.
High Tensile Fixed Knot Fence,Deer Fence,Fixed Knot Fence
Anping Enzar Metal Products Co.,Ltd. , http://www.enzarmetal.com