Chinese Cabbage Fertilizer Management

Cabbage can be divided into three stages: First, the early ball, from the heart to the pull, this period requires the temperature of 20-22 °C, night temperature of 10-12 °C, sunny, light enough, soil moisture Fertilizer enough to help the photosynthesis of the outer leaves and root absorption. Second, in the middle of the ball, the early and middle period of the ball is the fastest growing period of the heart. The weight of the ball is 80%-90% formed in these two periods. Third, late in the game, Chinese cabbage continued to grow, and the weight of leaf ball was still increasing. Therefore, special attention should be paid to strengthening the fertilizer and water management during the ball stage to ensure the normal growth of the leaf ball and prevent the occurrence of phenomena such as loose ball, fissure ball, deformed ball and even non-balling.
Cabbage grows vigorously during the ball-bearing period and requires a sufficient supply of fertilizer and water. Usually it takes 2-3 irrigations. In case of dry weather, the number of irrigations will increase. Pay attention to the first time the water should be light irrigation, to prevent sudden flooding water to make the cabbage ball cracking; the second time the water should be followed to prevent the surface crack caused by rooting. Irrigation should adopt furrow irrigation method to make water slowly infiltrate. This can not only ensure the water needed for the growth of cabbage, but also avoid excessive water and induce soft rot. Irrigation should be done so that no water accumulates in the ditch, no water is present on the ridge (raft), and there is no water shortage in the root system. Stop irrigating 5-10 days before harvest to ensure the storage of Chinese cabbage.
Fertilization should be controlled at the beginning of the ball to top-dressing a heavy fertilizer, mu application of ammonium sulfate or urea 10-15 kilograms, or combined with irrigation water to apply thin 1500 kilograms of manure, you can also chase cake 50-100 kg, but the cake must be fermented Decomposed. At the same time, 7.5-10 kilograms of superphosphate and potassium sulfate should also be applied to promote leaf ball growth. In the middle of the ball, combine the irrigation with a heart rate fertilizer, and apply 10-15 kilograms of chemical fertilizer or 1,000-1,500 kilograms of human waste per acre to promote compaction of the bagasse. The fertigation method can be used for ditching or digging deep. Shi.

Indicator
SanQiang medical companies specializing production Indicator.
Medical Indicator in the verification of the sterilization procedure,although the sterilization effect can be evaluated through the monitoring of certain parameters of the sterilization process,the degree of killing of the biological indicator is the most intuitive indicator for evaluating the effectiveness of a sterilization procedure.Commercially available standard biological indicators can be used,as can spores prepared with the most resistant micro-organisms isolated during daily production monitoring of contaminants.In the biological indicator verification test,the D value of the spore under the actual sterilization condition needs to be determined,and the spore purity and quantity are determined.When verifying,the microbial indicator of the biological indicator should be larger than the routine detection of microbial contamination,and the tolerance is strong to ensure that the sterilization procedure has greater safety.In the final sterilization method,biological indicators should be placed in different parts of the sterilizer.And avoid direct contact with the indicator to be sterilized items.The biological indicators are sterilized after being sterilized according to the set conditions,and cultured in a culture medium respectively to determine whether the spores in the biological indicator are completely killed.
Medical indicator in the sterilization biomonitoring of medical indicator,the standards 

Indicator

Medical Indicator,Chemical Indicator Tape,Plasmas Indicator,Self Contained Indicator

Henan Sanqiang Medical Equipment Liability Co.,Ltd , http://www.sterilizers-china.com