Water-saving agriculture and micro-irrigation technology are widely used in rice and vegetables, and the technology is mature and complete. The application technology on strawberry in the shed is still in the demonstration and popularization stage. Strawberry production is greatly affected by water, fertilizers, and pesticides. In traditional production, flooding with large water has caused the occurrence of strawberry powdery mildew, gray mold and root rot. In addition, the use of a large number of fertilizers and pesticides seriously affects the development of strawberries. Yield and quality. The application of protective field drip irrigation technique not only reduces the relative humidity of the air in the shed, reduces the occurrence of diseases and insect pests, enhances the ability of the crops in the shed to resist the infestation of diseases and insect pests, increases the soil temperature, but also improves the environment and protects resources. At the same time, it saves water, energy, and fertilizer. effect. Shandong Yibiyuan Water-saving Equipment Technology Co., Ltd. vigorously promotes strawberry drip irrigation technology under film in greenhouses. This technology has achieved good economic, ecological and social benefits in the actual strawberry production.

One, drip irrigation facilities.

1. Drip irrigation equipment specifications: the micro-irrigation belt is 25 mm in diameter, with double discharge holes every 25 cm, and the water delivery pipe is 40 mm in diameter.

2. Drip irrigation equipment and connection: drip irrigation equipment is composed of drip irrigation tape, water pipe, fertilizer applicator and special joint. The special joint is used to connect the micro-irrigation belt and the water delivery pipe; the fertilizer applicator is used to topdress the strawberry with the water during irrigation. Install a fertilizer applicator between the water source and the main pipe, install joints, and connect the micro-irrigation belt. A micro-irrigation belt supplies water to two rows of strawberries at the same time. There should be no suspended solids larger than 0.8 mm in diameter in the water source.

3. Technical process: small water pump + joint + filter + main, trunk, branch pipe + drip irrigation belt + fertilizer applicator-installation-debugging-operation-management and maintenance.

Two, supporting technology.

1. Making a high border: There are two ways of making a small high border and a large high border. Small tall borders are planted according to row spacing of 50-60 cm, plant spacing of 15 cm, border height of 10 cm, border surface width of 40 cm, and about 9,000 seedlings per mu. The drip irrigation belt is laid at the end perpendicular to the border, and the water delivery pipe is laid between the two rows of strawberries. When planting, choose seedlings with more than 5 leaves, and plant them with soil lumps on cloudy days or after 4 pm, without burying the heart on the top, and without roots on the bottom. inside). After planting, drip small water continuously until it survives.

2. Laminating: Cover with mulching around mid-November. Further improve the water-saving effect of drip irrigation, prevent lowering of ground temperature and moisturizing; avoid excessive air humidity, and reduce the occurrence of gray mold, powdery mildew, root rot, etc.

3. The principle of dripping water: follow the principle of "wet without waterlogging, and dry without drought", according to the water demand of each growing season of strawberries. The relative humidity of the soil is maintained at 50% to 60%. 80% of strawberry roots are distributed in the soil layer 15 cm down from the surface. The surface soil is very easy to dry, so dripping water should be small and many times.

4. Topdressing with water: topdressing urea, nitrogen, phosphorus, and potassium compound fertilizers, and biological fertilizers during the peak period of growth. However, the diameter of the particles after the fertilizer is dissolved should not be greater than 0.8 mm, so as not to block the water pipe holes and affect the quality of dripping water. Top dressing should be done at least 4 to 5 times.

5. Humidity management: The humidity in the shed should be reduced as much as possible throughout the growth period. Control the occurrence of diseases such as gray mold and powdery mildew.

The implementation of drip irrigation technology under the film in the strawberry greenhouse not only reduces the labor intensity of farmers, reduces the occurrence of pests and diseases, reduces the use of pesticides and the loss of fertilizers with water, but also enhances the quality and market competitiveness of strawberries, and promotes early ripening of strawberries. Increase the economic income of farmers.