As a result of this shock, the weather is warming and the watermelon in the kyoto suburbs is about to enter its planting period. The beijing agricultural technology extension station has developed guidelines for the management of plant management and disease prevention during the planting period, with a view to ensuring that producers are fully prepared for farm management and disease control during the planting period。
I'll do the whole thing
1. The warm ground. Twenty days prior to planting, the “two curtains” were fitted with warm ground to help warm the soil. Anthropophos-methyl compound of 30-40 kg per acre applied to organic fertilizers 5-6, with the machine having a deep flip and the till being flat。
I'll do the whole thing
Organic fertilizer
Soil disinfection. Using fumigation, sulfur powder is distributed evenly in the sheds, approximately 2-6 grams per square metre, and is then closed, burning sulfur powder produces smoke that kills the fungus. It is also possible to use pharmaceutical irrigation to flush 70 per cent of the disembowelable zinc powder with a certain percentage of water, which can effectively prevent watermelon run-downs, stand-down diseases, frosting, etc。
(c) a rise in the length of time. A week before the planting, it was formed using a small north-south-to-south-to-south-to-high-to-speech, with a surface height of 10 to 15 cm, a width of 70 cm and a distance of approximately 80 cm between the plume and the plume. A dredging tube covering the membrane, followed by watering the ground, suffocating the sheds to warm up, and one or two days prior to planting, laying holes and waiting for the sun to set。
Low temperature seedlings
Low temperature seedlings
Low-temperature seedlings are implemented from 5 to 7 days before planting, through cooling, water control, etc., to increase the resistance of young seedlings. Specific measures include a gradual increase in the ventilation time and volume of seedbeds, semi-tampling at night, and a reduction in watering. In case of cooling weather, such as cold currents, wind, etc., during seedlings, there is a need to reheat the nursery to prevent the freezing of seedlings。
Tanaka-san
1. Age of seedlings
Select the best seedlings of a three-leaf one-heart size. The small size of the seedlings, their poor adaptability and resistance to the outside world, their slowness and susceptibility to disease; the large size of the seedlings, the high evaporation of pre-planted leaves, and the insufficient absorption of the roots, can easily lead to atrophy of the plant and its long duration。
2. Timing
The planting time is usually from early march to late march, when the temperature at night is greater than 13°c. The choice of a clear morning planting, with more than two days of continuous clear weather, is more conducive to the smoothing of seedlings. In the event of chronically low night temperatures, additional measures of protection or delayed planting are needed to prevent blinding。
It's set in the morning
Cultivation
Cultivation density is determined on the basis of planting patterns and branching methods. In the spring, in small-scale watermelon casseroles, acreage density of 2000-2300 and acreage density of 1,400-1600 were established. Acreage by ground reptile is set at 750-1,000 plants。
Post-plant management
1. Temperature management
Temperature requirements. A closed room is established for a period of three days, during which the temperature is kept at 30-32°c to increase the temperature and promote root growth. The subsequent day temperature is at 28 - 32°c and at night at 15 - 20°c. Slow ventilation cools when the temperature is above 35°c during the day, and when the temperature drops to around 20-25°c, the vent is gradually closed. In case of cold temperatures at night, small arch sheds may be covered on small high-level saplings。
The ventilation method. In case of cooling, it is advisable to opt for vents of the waist and the top, to guard against vents of the wind, and to open the vents slowly so that they do not cause flashes. In general, the first part of the day is closed, the second part is closed. When the average temperature is 15°c or more at night, the small archer may be evacuated。
2. Fertilizer management
A week before the watermelon was planted, water per acre reached 15-20 metres. Small water is used to keep the soil from 65 to 70 per cent of its water content, and does not water for some time to promote seedlings. After 7 to 10 days, a percre of 5 to 8 per acre can be poured on the basis of soil acreage. Upon completion of the seedlings, a percubation of 8 to 10 per acre was carried out with a balanced water fertilization of 5 to 8 kg/acre. The water should be distributed from 8 to 10 a. M. In the morning。
Get up
3. Disease prevention and control
The main diseases in the beijing area during the planting period are dead and fallout, with fewer pests. A 5-7 day pre-planting proposal of 500 times more dysentery than 70 per cent of the dysentery manganese humid powder or 41 per cent of the polypolymeric lysine 800-1,000 times impregnated root can effectively prevent the occurrence of adhesive and fallout diseases, with a view to increasing the rate of replantation and reducing the time spent on seedlings。
