First, a reasonable pick leaf
With the increasing number of zucchini leaves, it is easy to cause field canopy closure, poor ventilation and light transmission, the lower leaves are difficult to see light for photosynthesis, but also because of high humidity, easy to infect pathogens, resulting in disease outbreaks. Especially in the deep winter season, the temperature in the shed is low, the humidity is high, and many pathogens are present. In addition, the lower leaves are easily injured and broken when spraying or picking the guava, which is more likely to cause diseases. Therefore, it is very necessary for the squash to pick up the leaves reasonably and improve the ventilation and light transmission conditions.
The picking leaves of squash should be determined according to the growth of the plants. The harvested leaves can be picked more, and the weaker ones should be picked up to ensure the good ventilation and light transmission in the field. In order to avoid the stalks from being hard to heal after injury, it is recommended that growers only go to the leaves and do not handle. Because the petiole is thick and brittle and removed from the base, the stem is prone to large wounds, difficult to heal, and the leaves can be removed in whole or in large portions, which can promote the petiole to dry off faster. In addition, it should be noted that it is best to have several consecutive sunny days when the leaves are removed, so that the environment inside the shed is relatively dry and not susceptible to diseases. After picking the leaves, the farmer can spray 4000 times streptomycin or 600 times Garinon to prevent disease infection in advance.
Second, Baohuaguagua
The cultivation of summer cucurbits in the greenhouse, seedling development period is mostly in the short-day, low-night temperature environment conditions conducive to the formation of female flowers, generally grow to 3 to 4 true leaves when there are female flowers occur, even with female flowers, more than one section female flower. Excessive female flowers are allowed to grow and develop, which inevitably consumes a large amount of organic nutrients. The nutrient competition is fierce, which affects the growth of plants and young melons, and also leads to a large number of melons. Therefore, too many female flowers must be eliminated early to reduce nutritional competition and promote melons. Excessive female flowers are best eliminated when exposed. The number of sparse female flowers should be determined based on the growth of the melons. Weak growers should wipe out the root melon first, and then leave a female flower every three quarters later; the melon grows strong and can leave root melons, but it should be harvested early and leave a female flower every two or so. And should be adjusted according to the trend of melons, melons and melons in a timely manner to adjust the amount of melon, in order to reduce unnecessary nutrient consumption, maintain the strong growth potential of melons, to stay a melon into a melon.
Third, the late melon should be set in time
In the later stage of squashing, the plants are tall and some even exceed 2 meters, which causes troubles for the management of picking and spraying. The peasants should pay attention to the timely fall of vines. The stalks that fall on the ground can be buried with soil to promote the regeneration of adventitious roots and improve root absorption of water and fertilizer. The ability to delay plant aging and increase late production.
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Cas 368421-58-3,Isavuconazole Intermediates,2-Amine Hydrochloride
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