The influence of the temperature environment of the facility on the growth of crops
(a) Three temperature points:
Different crops have their own "three base points" for their temperature requirements, ie the lowest temperature, the most suitable temperature, and the highest temperature. The three-point requirements of crops are generally closely related to their origins. They are native to temperate regions and have a low temperature at the growing base. They generally begin to grow at about 10°C; they originate in the subtropics and begin to grow at 15°C to 16°C; they originate in the tropics. Ask for higher temperatures. Therefore, according to the different temperature requirements, crops can be divided into three categories of cold resistance, semi-cold resistance and cold resistance.
(1) Cold-resistant crops have strong cold resistance and moderate fertility. The biennial species of these plants are generally not tolerant to high temperatures, and when the heat arrives, they grow poorly or die prematurely when they complete the reproductive growth stage. Perennial species or aboveground dead, winter perennial or plant winter. Such crops can generally be cultivated in winter and even overwintered on land by using simple protection facilities such as small sheds in North China. Such as pansy, snapdragon, hollyhock, leeks, spinach, green onions, grapes, peaches, plums and so on.
(2) Semi-cold crops These crops have cold tolerance between cold tolerance and non-cold crops and are resistant to frost but do not tolerate low temperatures below long-term oY. Generally, it can be exposed in winter or in open field in the south of Huanghuai, and facilities cultivation is needed in the north of Huanghuai. Such as violet, calendula, radish, celery, cabbage, cabbage, seedlings, peas and beans. The optimum temperature for the assimilation of these plants is 18°C-25°C; over 25°C, the growth is poor, and the assimilation function is weakened; when the temperature exceeds 30°C, almost no assimilation product can accumulate.
(3) Cold-tolerant crops During the growth period, the higher temperature is required, and the low temperature below o°C cannot be tolerated. Generally, it grows during the frost-free period, and is mostly annual or perennial greenhouse plants. Among them, thermophilic plants such as primrose, cineraria, camellia, cucumber, tomato, eggplant, and kidney bean, etc., have a suitable growth temperature of 20°C to 30°C, and almost stop growing when the temperature exceeds 40°C, and when the temperature is lower than 15°C. At °C, poor growth or pollination, poor fertilization. Therefore, the winter production of such plants can only be carried out in warmed greenhouses.
(b) Flower bud differentiation and temperature:
Many wintering plants and perennial woody plants are required for low temperature in winter, and the necessary low temperature can be achieved to complete flower bud differentiation and flowering. This is very important in the cultivation of fruit trees. When aiming at early maturation, how to break the dormancy is the most important issue in the cultivation of fruit trees. This requires grasping the low temperature demand of different fruit trees to relieve dormancy.
Application:
Ride-on Road Roller Used for compaction of asphalt surface, gravel, sand and other projects.
Features:
1.Operating radius is small, can work in a small area;
2.HONDA petrol engine or famous diesel engine international brands, quality assurance,superior performance, easy start;
3.International brandname SAUER hydraulic drive unit,variable speed,reversing convenient;
4.Handrails using plane gear adjusting mechanism, flexible, can adapt to different height workers to operate;
5. NSK Bearings by internationally renowned, MITSUBOSHI (Samsung) belt, to ensure that the work performance of the machine.
Main scope: Concrete Grinding machines, Floor Polishing Machines, Road Line Marking Machines, Truck Cranes, Road Rollers, excavators, Concrete Leveling Machines, Power Trowels and other Construction machinery .
Jining oking tec co.,ltd, established in 2010, is a professional manufacturer engaged in the research, development, production, sale and service of Concrete Grinding machines, Floor Polishing Machines, Road Line Marking Machines, Truck Cranes, Road Rollers, Excavators , Concrete Leveling Machines, Power Trowels and other Construction machinery .
We are located in Jining city,Shandong province with convenient transportation access. Dedicated to strict quality control and thoughtful customer service, our experienced staff members are always available to discuss your requirements and ensure full customer satisfaction.
In recent years, we have introduced a number of advanced production equipment, and also have an excellent production team and a complete quality assurance system to ensure that each batch of goods is delivered to customers in a timely and high quality.
We also have an excellent management team, experienced technical staffs and professional sales team to solve all problems you encountered before and after sales. In addition, we have obtained I S O 9 0 0 1:2 0 1 5 certificates. Selling well in all cities and provinces around China, our products are also exported to clients in such countries and regions as United States, Europe,Australia, Southeast Asia,Russia,the Middle East,Africa. We also welcome OEM and ODM orders. Whether selecting a current product from our catalog or seeking engineering assistance for your application, you can talk to our customer service center about your sourcing requirements.
Ride On Road Roller,Vibratory Roller,1 Ton Ride On Road Roller,Hydraulic Vibratory Road Roller
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