Method for cultivating high-yield plant types of overwintering tomatoes in sunlight greenhouse

Abstract

The invention discloses a method for cultivating high-yield plant types of overwintering tomatoes in a sunlight greenhouse. The method comprises the following steps of cultivating overwintering tomatoes in the sunlight greenhouse, selecting indeterminate growth type tomato varieties, firstly adopting single-trunk whole-branch vine hanging cultivation, when first main branches grow to have fifth-layer flower spikes, remaining 2 leaves, performing pinching and head changing for the first time, reserving a side branch under fourth or fifth flower spikes as a second main branch (new head) in advance, and performing vine dropping for one time; when the second main branch grows to have 2-3 leaves, additionally performing head changing for one time so as to promote fruit bearing at a lower layer;and when the head of the second main branch grows to have tenth-layer flower spikes, remaining 2 leaves for topping off. A repeated chemical control method is adopted, the height of the first main branch is controlled to be 150 cm, and the height of the second main branch is controlled to be about 120 cm. About 4 fruits consistent in sizes are remained at each layer of flower spikes, and each tomato bears 10 layers of fruits. Through the adoption of the method disclosed by the invention, the upper-layer fruit bearing rate of the plant types of the overwintering tomatoes in the sunlight greenhouse is high, the yield potential is large, the number of times for head changing is reduced, time and labor are saved, the effects of being ventilated and transparent are achieved, fruit branches arenot crowded, and the time of tomatoes appearing in the market is 10 days or above earlier.

Description

technical field [0001] The invention relates to the technical field of greenhouse vegetable planting, in particular to a method for cultivating a high-yield plant type of overwintering tomato in a solar greenhouse. Background technique [0002] The solar greenhouse is the main vegetable cultivation facility in northern my country, and tomato is one of the main vegetables cultivated in the solar greenhouse. There are mainly two crops of tomato crops in solar greenhouses (spring and autumn crops) and one large crop of overwintering. The planting period of spring stubble is from February to June, the planting period of autumn stubble is from August to December or January of the following year, and the planting period of overwintering stubble is from October to June of the following year. Among them, the large crop overwintering in the solar greenhouse is the main crop type, with high technical requirements, long fruiting time (the production period after planting is as long as...

AI Technical Summary

Problems solved by technology

[0012] Aiming at the deficiencies in the prior art, the purpose of the present invention is to provide a method for cultivating a high-yield plant type of overwintering tomato in a solar greenhouse, which solves the problem that the traditional single-stalk pruning of tomato overwintering in a solar greenhouse has a high plant type and requires multiple falls. vines, weak growth in the later stage, lower fruit setting rate in the upper layer, low yield potential, etc., and it takes a lot of time to solve the problem of repeated head change. The fruit branches are easy to be crowded, which affects ventilation and light transmission. question

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