The seeds were disinfected with 70% ethanol for 1 min, rinsed with distilled water, and soaked for 1 d. Each variety was selected for 60 seeds in a diameter of 9 cm and placed in a 15°C artificial climate box for 15 days. At the same time set the normal temperature control. Measured index: germination rate /% = number of germinated grains / total number of test grains × 100. Three-leaf-age seedlings grown at room temperature were placed in an artificial climate chamber at 5°C, relative humidity: 70% to 80%, light intensity: 20,000 to 30,000 lx, 12 hours, treated for 7 days, and recovered at room temperature for 6 days. According to the chilling grading standard at seedling stage, the indexes for determining the cold tolerance of rice were determined. The varieties are planted in plastic pots with a diameter of 13.5 cm and a height of 11.5 cm after cultivation in the greenhouse at the age of 3 leaves. Each pot has 3 holes and 3 for each hole. Six pots of each variety were transplanted. The plastic pots were planted in the paddy fields and the water surface was not over the pots. Three pots were treated at low temperature during the booting stage and three pots were used as controls. The low-temperature treatment conditions were: artificial climate box treatment at 15°C, relative humidity 80%, light intensity: 10,000 lx, and processing time 7 days. The indicators include plant height, grain weight per plant, seed setting rate and 1000-grain weight in mature rice.
Through the artificial climate box, different temperatures of different rice varieties were treated at low temperatures. The results showed that there were differences in the response of the varieties to low temperature, and the cold tolerance of the same variety at different growth stages was different. The comprehensive test results showed that the tested varieties of Yuyu 131 and Longjing 29 had relatively strong cold tolerance at the bud stage, seedling stage and booting stage.
Movable Oil Purifier is the oil infusion and purification device, which is developed by our company, has practical design, can convenient move and simple maintain, with low noise,high adsorption and stable operation.
The pipeline is provided with overflow protection device, can efficiently protect safety of hydraulic pressure system. It adopts thermal relay protection to prevent motor from damage caused by overloading. The coarse filter in suction orifice can protect oil pump and increase service life of filter; there are two-stage fine filters in back of the pump, which can make oil rapidly achieve high cleanliness. We can design fine filter precision according to customer requirement, in order to achieve required service condition.
The filter shell adopts quick open structure, can rapidly open upper cover and replace filter cartridge without using any tools. The pressure gauge is installed on control panel to continuous indicate operation condition of system and pollution condition of cartridge during working.
Product Application
-The oil infusion and purification for hydraulic and lubricant system.
-As a by-pass filter in hydraulic and lubricant system during working.
-Cycle filtering before operation of hydraulic and lubricant system.
-The oil in hydraulic and lubricant system will not be discharged from filter pump.
Liquid Filter,Movable Oil Purifier,Small Movable Oil Purifier,Oil Regeneration Purifier
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