Pumpkin Peach
(1) The growth of young larvae, whose main symptoms grow to a certain size, stops, gradually turns yellow and shrinks, and finally they dry up or fall off.
(1) The cause of the disease is pollen development, the temperature of the greenhouse in the early spring is low, and the temperature in the greenhouse is too high at the later stage.
The powder is stunted. When the humidity is high, pollen is not easy to disperse. The female flower cannot be pollinated and the seeds cannot be formed.
Enough for auxin (IAA), which leads to melons. Inappropriate fertilizer and water management results in leggy plants and breaks vegetative growth and reproduction
Balance of growth. In this case, if the artificial pollination is not timely, miss the best timing of pollination, easily lead to melon.
(3) Control measures
1 prevent leggy promote normal growth and development of plants, strengthen insulation measures, strengthen fertilizer management, prevent soil water
Excessive nitrogen and nitrogen fertilizers lead to leggy.
2 timely pruning, sparse melons to remove lateral branches, zucchini basic melon section, due to competitive nutrients, it is impossible to sit all
Live, should be removed as soon as possible to seize the melon.
3 Adjust the balance of vegetative growth and reproductive growth According to the plant growth, weak strains should be harvested as early as possible;
The upper part of female flowers can be harvested as early as possible, and the long crop should be harvested appropriately.
4 Medicament treatment can use 25 to 30 mg/L of 2,4-D or 50 mg/L of anti-droplet (Tomato Spirit)
Apply pedicels and spray with 80-150 mg/l gibberellin.
5 Conduct artificial pollination before and after 9:00 am at flowering time. Remove male flowers, remove petals, and remove flowers.
The pollen on the medicine smears on the female stigma.
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