Cultivation techniques of Strawberry in Pipeline

The pipeline cultivation of strawberry is to use the pipeline as the carrier of strawberry cultivation, and the micro-control computer is used to realize the intelligent regulation of environmental factors such as nutrient solution, temperature, light, gas and heat, so that strawberries can grow, blossom and bear fruit normally and rapidly under the condition of pipeline hydroponics. This method can reduce the diseases and insect pests caused by the soil, make it more safe and hygienic, and carry out three-dimensional cultivation in greenhouse, family balcony, indoor and other places, greatly increase the yield per unit area, and can also be used as a tourism project for sightseeing agriculture. The Intelligent Rapid Propagation Center of Lishui Institute of Agricultural Sciences in Zhejiang Province has achieved success through two years of experiment. the main technical links are introduced as follows.

Planting technique of Strawberry in Pipeline

1. Construction of cultivation facilities

(1) site selection. Large area piped cultivation is generally required to be carried out in the greenhouse, in order to facilitate the control of temperature, light, gas and heat, while small area cultivation can be carried out on the roof and balcony.

(2) the production of cultivation frame. Bought from the market PVC tube, every 20 cm to punch a hole, the pore size of 6 Mel 10 cm, the length of the tube to 8 Mel 10 m is appropriate, too long easy to cause terminal plant hypoxia. Put the perforated PVC pipe on the leveled wooden frame, the height of the wooden frame is about 1.5m, it is convenient for manual operation, the inclination of the wooden frame is 60 degrees, the distance between each layer of the pipe is 30cm, the planting amount per unit area is too large, and too small affects ventilation and lighting.

(3) the construction of nutrient pool. Nutrient pool denominator pool and liquid storage pool. The liquid storage tank is mainly used for pipeline nutrient liquid circulation and storage for reserve, so that the nutrient solution can be recycled. The mother liquid pool is mainly used to store the mother liquid of supplementary nutrient solution. After the nutrient solution is absorbed by plants, the nutrient composition decreases. The conductivity value can be detected by micro-control computer. If it is lower than the set value, the mother liquid will be replenished automatically. Nutrient pool and mother liquor pool should be built underground, warm in winter and cool in summer is conducive to the rapid growth of strawberries.

two。 Cultivation techniques

(1) selection of strawberry varieties. Tube-cultivated strawberries generally choose varieties with short dormancy period, few days from bud to flowering, high fruit setting rate, cold tolerance, shade tolerance and strong disease resistance, such as Chunxiang, Mingbao, Fengxiang and so on.

(2) preparation and colonization of seedlings. Pipeline cultivation of strawberries in greenhouse is mainly for the supply of spring light market, so it is required that the seedlings have completed flower bud differentiation before freezing. One week before planting, carbendazim and methyl thiophanate were used for preventive disinfection and sterilization. Before planting, cut off old leaves, diseased leaves, stolons and some rotten roots, and remove young and weak seedlings. It is generally planted in early October. When planting, it is wrapped in a sponge around the root neck and stuffed into a well-punched pipe hole.

(3) configuration of nutrient solution. The nutrient solution for strawberry cultivation can choose a full-price nutrient solution, such as a Japanese garden-style formula, or a formula for Yamazaki strawberries. In order to prevent precipitation during configuration, it is generally necessary to separate the calcium source from the phosphorus source. Can be divided into three categories A, B, c (such as Yamazaki strawberry formula), calcium nitrate and potassium nitrate that do not produce precipitation are grouped into one category, monoammonia phosphate and magnesium sulfate are classified into another category, and others are classified into one category. When configuring, generally add water lhammer 3, completely dissolve the class A substance, stir evenly, then dissolve and dilute the class B substance to a certain extent and slowly inject it at the inlet, add water and stir constantly while injecting, stir evenly and then add C liquid in the same way. Yamazaki strawberry formula, per ton according to the following quantity ratio: class A substance, calcium nitrate tetrahydrate 236g, potassium nitrate 303g; class B substance, monoammonium phosphate 57g, magnesium sulfate heptahydrate 123g; liquid C, boiled iron 20rel 40g, boron 2.86g, manganese sulfate tetrahydrate 2.13g, zinc sulfate heptahydrate 0.22g, copper sulfate 0.08g, ammonium molybdate 0.02g.

(4) the adjustment of pH value of nutrient solution. The pH value of cultivated strawberry nutrient solution should be kept between 5.5 and 6.5, which can be detected by portable pH meter. If pH is too high that is alkaline, you should add appropriate amount of phosphoric acid or sulfuric acid to neutralize; if it is hard water area, you can use the mixture of phosphoric acid and sulfuric acid to neutralize; when pH is too low, that is, acidic, you can add sodium hydroxide or potassium hydroxide to neutralize. The suitable adjustment period of pH is 2 weeks, and it is found that the value of pH is not suitable to be adjusted immediately in the liquid storage pool.

3. Management after planting

(1) the management of electrical conductivity of nutrient solution. After planting, the seedling stage: 1.0 Mel 1.5 mg; the flowering and fruiting stage: 1.5 Mel 1.8 mg; the harvest stage: 1.8 Mel 2.0 mg.