Nowadays, most of the tomatoes are planted in greenhouses. Immediately, the tomatoes in the greenhouse will enter the flowering period. Farmers who grow tomatoes know that the tomato flowering period is the most crucial. Fertilizer management, inserting, tying, snoring, topping, flower thinning, fruit thinning, etc. can not be sloppy. The following small series will give farmers a brief introduction to the management points of the greenhouse tomato flowering period.
1. Fertilizer management
Appropriate control of the amount of nitrogen fertilizer, generally need to top dress 3-4 times, the direct application of the mulch film to the face, the cover of the mulch is open.
Topdressing time: The first time in the first ear fruit expansion period, 10 kg of compound fertilizer per acre, 25 kg of superphosphate, and clearing the soil. For the second time, in the 2-3 ear fruit expansion period, 30 kg of compound fertilizer per acre was applied. For the third time, in the 4-5 ear fruit expansion period, 35 kg of compound fertilizer per acre was applied. If there are more fruit, there will be de-fertilization phenomenon, and it is necessary to increase the number and dosage of top dressing. The irrigation time and quantity are determined according to the soil moisture and plant growth in the shed. Generally, the water is poured once every 7-10 days. The water content should be increased appropriately during the fruiting period.
2, inserting, tying
Plants should be laid in time when the plants are not standing upright before flowering. At present, most of them use fishing nets to hang vines, and the height of the slings is 1.5-2 meters, depending on the number of remaining ears. It can also be used for bamboo rafts, and the use of rice stalks for 2 ears is inserted, that is, 1 bamboo raft is inserted next to the raft, 80-100 cm high. Leave the fence above 3 spikes. Regardless of the shape of the frame, it is necessary to insert the straight and securely to avoid the inverted frame in the middle and late stages. Fix the upper part of the sling and erect the erection to avoid breaking the rope. After the truss, the vines were tied in time, and after that, an average of 1 spike was tied to the vine.
3, snoring, topping
Tomatoes with strong branching, single-drying, should be promptly removed from the lateral branches of the leaves. The infinite growth type tomato adopts a dry half or double dry pruning; the finite growth type tomato retains one side branch under the first inflorescence, and the side branches which are to be taken from the side branches should be removed, and the main branches should be adjusted in time, and the effective side branches should not be removed. . After the main branch has a predetermined number of spikes, two leaf toppings are retained in the uppermost flower spike.
4, thinning flowers, thinning fruit
In order to improve the quality of the fruit of the fruit, the flowering period of the tomato needs to be thinned, and the deformed flower and the small flower bud are removed. Generally, 5-6 auxin flowers can be retained on each panicle. When the fruit grows to the size of the chestnut, the fruit is thinned, leaving only 3-4 uniform fruits on each flower spike, and the rest are removed early.
The above is the management of tomato flowering period. Tomatoes want high yield and high quantity, and flowering management is the most crucial. Farmers who have planted tomatoes in greenhouses must master the above flowering management points and improve the fruit setting rate of tomatoes.
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