a. The characteristic of copper deficiency is the emergence of new shoots. At the beginning of summer, the growth of the tip of the new shoot stopped, and the leaves showed mottled and chlorotic. The tip and edge of the tip of the new shoot are browned, and the new shoot looks like a wilting. Finally, many of the top leaves fall off and the new shoots die. Sometimes in the growing season of the year, but mostly in the growing season of the leap year, the lateral shoots under the dead part grow new shoots, but they also die. After many years of repeated death, the copper-deficient strain looks like clusters and grows short.
b. The bark-deficient copper bark is rough and corked, but the degree of occurrence is different, which is related to the variety.
c. The copper-deficient fruit has cracking or gelation, which can lead to depression.
d. Copper content in copper-deficient leaves is usually below 3 mg. In the newly opened land, the orchard, which often sprays Bordeaux liquid, usually does not suffer from copper deficiency.
(2) Correction method
a. Add organic fertilizer and improve soil quality to avoid copper deficiency.
b. Copper-deficient orchard, depending on the age of the tree, 0.5 to 2 kg of copper sulfate per plant, or 0.1% copper sulfate solution before spring germination.
Mass Flow Meter Batch Controller
Zhejaing Sealand Technology Co., Ltd. is a trustworthy manufacturer of Mass Flow Meter Batch Controller, Batch Controller, Controller, Register & Counter.
A Main functions and features
1. Electronic control and showing filling amount & total automatically; 2. Mass and volume modes are available;
3. Amount/ Total preset function (if with control valve);
4. Data can be saved & re-displayed after power failure;
5. The last 2000 transactions can be saved;
6. Shift total and Inventory total can be calculated;
7. Error code will be shown when fault happens;
8. Over-low protect function;
9. Temperature compensation function;
10. Reasonable structure, easy for maintenance;
11. IC card system & GPRS communication (Optional).
B Main technical data
8-8-6 digit display: 8-digit for amount, 8 for total and 6 for price Environmental temperature: -35oC ~ +55oC
Working voltage: 24VDC ± 1V or 220VAV ± 10% Power: 20W
Relative humidity: 30%~90%
Atmospheric pressure: 86kPa~106kPa
Ex-mark: Ex d e ib IIB T4 Gb
Certificate No.: CCRI 19.1012
Mass Flow Meter Batch Controller, Batch Controller, Controller, Register, Counter
Zhejiang Sealand Technology Co., Ltd. , https://www.sealandflowmeters.com