High-yield cultivation techniques of Sweet Pepper in Solar greenhouse

High-yield cultivation techniques of Sweet Pepper in Solar greenhouse

1 selection of varieties

Varieties that are tolerant to low temperature and low light should be selected.

2 cultivation season

Early spring stubble: sowing date from mid-December to early February, planting from early March to early April, and harvest from mid-April to mid-June. Overwintering stubble: sowing date from mid-May to mid-June, planting in mid-August, harvest from late October to late April.

(3) soil preparation and fertilization

Per mu of land with calcium superphosphate 50kg, diammonium phosphate 50 jin, potassium sulfate 50 jin, farm manure 15~20m3 evenly spread on the floor of the shed, and then turn the 30cm deep, and then rake the ground to dry in the greenhouse, and ten days later ventilation is ready to make the border.

4 colonization

Planting should be carried out on a sunny morning, and the planting water should be watered thoroughly. Three days later, slow seedling water should be watered in time. Root irrigation every 2 days after irrigation can prevent diseases and promote root growth.

In the first 3 days after planting, the temperature is not high and there is no need for ventilation. After 3 days, there was little ventilation, and the temperature should not be lower than 28 ℃ in the early stage of seedling retardation. After seedling retardation, the air temperature should be properly ventilated and cooled to facilitate squatting seedlings. The temperature should be controlled between 25-27 ℃ in the morning and 22-25 ℃ in the afternoon. It was controlled at 22: 23 ℃ in the first half of the night, 16: 18 ℃ in the second half of the night, and the low temperature was kept above 20 ℃.

5 reasonable pruning

Generally speaking, hot pepper can be pruned with three or two poles, and whether to keep the pepper can be decided according to the growth of the seedling. If the plant is growing well, it can be removed in time. In order to increase the initial leaf area, it can leave 4 to 5 leaves. Three trunk pruning, to hang three trunks, in different directions, conducive to ventilation, promote flowering and fruit setting. However, no matter three-stem pruning or double-trunk pruning, you can leave the side branches on the trunk, according to the growth of the side branches, you can leave 1 or 2 buds, and 1 or 2 leaves on the buds to pick the heart. after the pepper sits, remove the curved pepper and deformed pepper, leaving the ones of good quality.

(6) Scientific topdressing and irrigation

Foliar fertilizer should be added in time when plants blossom and bear fruit, mainly nitrogen, phosphorus and boron, door pepper should be fertilized in time after sitting, mainly balanced fertilizer, and balanced green Bolai mu can be selected to apply 4~5kg. When the fruit grows to about 3~6cm, it is necessary to add potash fertilizer, such as applying 4~5kg per mu or Xin Li 5kg per mu of green Bolai with high potassium. According to the growth of the plant, it is necessary to fertilize properly and timely, mainly organic fertilizer, the moderate and strong plants can choose a bucket of Dashanong, when the plants are weak, they can spray foliar fertilizer with high phosphorus, nitrogen and potassium, 4kg should be applied with crystal diammonium per mu, and calcium-deficient plants can choose green Bolai with calcium and magnesium type to apply 5~6kg per mu. These fertilizers should be used alternately. Potash fertilizer is the main fertilizer in the full fruit period, and the green Bolai with high potassium can be applied with 4~5kg per mu. After entering November, with the decrease of external temperature, organic fertilizer can be used again. Nadori No. 2 and protein liquid can be selected according to the growth of the plant. After entering March, it was applied with diammonium phosphate combined with organic fertilizer. Avoid severe winter flood irrigation roots, to small water irrigation, according to the situation, generally about 10 days to apply.

7 Prevention and control of diseases and insect pests

Pepper seedlings are afraid of virus disease and need to control aphids, whiteflies and thrips. After planting, amiceda was sprayed 2 or 3 times to prevent powdery mildew. After the onset of powdery mildew, it was treated with amiceda and silver farinoside and sprayed twice in a row. During the whole growing period, attention should be paid to the control of aphids, whitefly, thrips and harmful mites.

8 harvesting and management

The door pepper should be harvested in time. Generally, when the fruit is slightly hard in hand, it can be harvested regardless of the size. After harvest, the diseased leaves of the old leaves and the lower yellow leaves should be removed in time, and then hit the yellow leaves in time with the fruit picked. It is beneficial to reproductive growth. After harvest, it is necessary to strengthen the management of fertilizer and water, so as to have a good yield next time.