First, sowing until now
Maintain the smoothness of the Sha Tin sulcus, and the car surface is moist and free of stagnant water. Check the cover film condition. The film is tightly packed with mud around to prevent it from being blown by the wind. It is found that the film is opened and it should be promptly closed. In the event of continuous high temperatures on sunny days or rainy days, the membrane should be ventilated at both ends at noon, and promptly covered.
Second, after being green
Keep the soil dry to promote root growth. It is advisable to keep the temperature within the membrane at 20-25°C and not exceed 35°C. Keeping the soil on the ground is not whitening, and the seedlings are not curled in the sunny days at noon. Water replenishment method can be used to fill the ditch water in a small area and water can be sprayed sooner or later.
Seedlings that have used strong scorpion agents do not generally need top dressing. If the seedlings have lighter leaf color at the time of one leaf stage, put about 1% (below) urea solution per mus of the urea solution, and sprinkle with water to protect the leaves from fertilizer damage. .
At noon on a sunny day, the two sides of the sleeping compartment should take care of the film and ventilate them, and they should be covered before the evening. If the compartment is too long, when the temperature is too high, in addition to removing the film on both ends, a small sunroof must be ventilated or the membrane must be removed in the middle. Gradually increase the time for hardening.
Before and after the three-leaf clover
When the seedlings have 2 leaves and 1 heart, 1.5-2 kg of urea per hectare is applied as a weaning fertilizer, and 150-200 kg of urea solution with 1% concentration can be applied, and then sprinkled with water to prevent fertilizer and damage.
Keep disc soil moist and seedlings not rolling leaves, lack of water and water.
When the average daily temperature is stable at 14°C, or when the leaf age is about 3 leaves, the seedlings will be uncovered in a timely manner. Sprouting seedlings are carried out step by step, from as little as possible to as many as all.
The greenhouse temperature control should focus on preventing high temperature hazards. The maximum temperature at sunny noon in the nursery shed is 41-42°C, which is a great threat to the growth of seedlings. Cooling should take the following measures: First, ventilation, open the door, shake the film up to speed up the air circulation; Second, replenishment, at noon through the replenishment can make the temperature drop 3 °C, take the above measures can make the temperature within the shed does not exceed 35 °C .
Film picking time is best selected in the sunny afternoon. Before uncovering the film, there must be water or irrigated water in the ditch to prevent the death of the dead. After uncovering the film, if continuous rainy weather or extreme cold weather is encountered, the cover film shall be continued to prevent the bed soil from affecting the picking and transplanting.
Ventilation is necessary for greenhouse cultivation. One can change air, the other can cool and regulate humidity, and the third can regulate seedlings. The main stage of emergence is closed sheds, and appropriate ventilation is needed. 1 leaf 1 heart to 2 leaf 1 heart ventilation during the day and close the shed at night. 2 leaf 1 heart period ventilation after all the days of shed, cooling and hardening seedlings.
See the seedlings growth situation, apply to send marrying manure, mu is applied with 1% concentration of urea.
The major pests and diseases in Putian period are: bacterial wilt, cotton rot, sheath blight, seedling mites, southern black stripe dwarfism, etc., and attention should be paid to the occurrence of pests and diseases.
3-5 days prior to transplanting, apply the graft once.
Functional oligosaccharides refer to oligosaccharides that are difficult or impossible to be digested and absorbed by the human body and have special physiological effects on the human body. Its sweetness is generally only 30-50% of that of sucrose, and it has physiological functions such as low-calorie, anti-caries, prevention and treatment of diabetes, and improvement of intestinal colony structure. Due to the special physiological functions of functional oligosaccharides, it becomes a nutrient and health care product. A new generation of food-effect raw materials that integrate diet and therapy. It is a new functional sugar source that replaces sucrose and has a wide range of uses and application prospects. Common functional oligosaccharides include: xylo-oligosaccharides, fructooligosaccharides, galacto-oligosaccharides, isomaltose, raffinose and so on.
XOS, GOS, FOS, IMO, Raffinose, oligosaccharide
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