Greenhouse eggplant fruiting period management measures

The fruiting period generally refers to the period when the plants are 2 to 4 layers of fruit. The main management measures are:

1. Continue to do a good job of the shed temperature control results, the temperature inside and outside the shed began to enter the high temperature period. In order to prevent high temperature hazards, it should be ventilated and cooled in time. During the day, the bottom foot film under the shed can be rolled up to the raft. When the nighttime temperature is not lower than 15 °C, the skylight is not closed, and the wind is kept up, so that the shed temperature is kept at 25-30 °C during the day and 15-20 at night. °C. By the middle and late May, the grass can be covered at night, and the temperature in the shed is roughly equal to the temperature outside. However, in order to avoid rain and wind, it is advisable to keep the film and not remove the grass. In order to prevent pests such as mites and whitefly from invading the shed, a nylon gauze or shade net may be arranged outside the ventilation window.

2, increase the supply of fertilizer water Eggplant is a crop that requires more fertilizer and water, especially in the fruiting period, the fertilizer and water supply must be strengthened. It takes 8 to 10 days to pour 1 time of water, and 1 time of water to catch 1 time of fertilizer. The amount of topdressing is 10 kilograms of urea per acre or 800 to 1 kilograms of human dung. It is best to use watering and watering. Fertilizer and human dung are used alternately. In the middle and late stages of fruit growth, 6 to 7 kg of potassium sulfate should be applied per mu and 0.5% urea solution should be sprayed on the foliage. In the fruiting stage of eggplant, it is not advisable to apply phosphate fertilizer to prevent the fruit from becoming hard.

3, reasonable pruning eggplant branches are more regular, the latent buds of each leaf stalk below the stalk, easy to germinate under certain conditions to produce side branches. In order to reduce nutrient consumption and improve ventilation and light transmission conditions, useless side branches should be removed in time. For the early maturing varieties, the three branches of the remaining three stalks are used, that is, in addition to the main stems, the two side branches that are drawn in the first and second leaf mites under the first inflorescence should be retained, and the main stems are three times. In addition, the side branches of the base are wiped out. For the mid-late mature varieties with strong growth, the second branching method is adopted, that is, only a strong side branch of the main leaf branch and the first leaf mites under the first inflorescence is left, and the remaining side branches are wiped off. Shrinking and small weak trees should be carried out. When the four-doored eggplant is placed on the fruit, four leaves can be left in the upper part of the eggplant to pick the heart, so that the nutrients can concentrate on the fruit and promote its expansion and maturity.

4, to prevent falling flowers and fruit, the current commonly used regulators are mainly 2,4-D, the use concentration is 20 × 10-6  ~ 30 × 10-6, when the temperature is high, the concentration is low, when the temperature is low, the concentration is high limit. The method of use is to apply a liquid medicine with a brush and apply it to the upper end of the flower handle. Note that 2,4-D can only be used as a spread and silk flower, and can not be sprayed to prevent damage to young leaves. In addition, you can spray with tomato spirit or anti-falling. The concentration is 30 x 10-6 to 50 x 10-6 Torr. The best time to use the conditioner is when the flowers are ready to be placed or just opened.

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Materials
Wetted parts: AISI 316/304
Other parts: AISI 304
Gaskets (standard): EPDM(FDA)
Mechanical sealing(standard): C/SiC/EPDM
Internal surface finish: Polished
External surface finish: Sand-blasting

Technical specifications
Max. flow : 30m³/h 132GPm
Max. head : 30H(M)
Max. pressure : 3Bar/43PSI
Max. operating temp. : 120°C/248°F
Max. revolving speed. : 1750 min
Max. suction head : 8m/22ft

Options
Mechanical sealing in SiC/SiC
Gaskets in FPM(Viton) and PTFE
Inlet&Outlet Connection: Tri-Clamp, Threaded, Flanged to DIN, SMS, 3A, RJT e

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