Experience of cultivating Hami Melon in greenhouse
In recent years, Xinjiang cantaloupe has been successfully introduced, demonstrated and popularized in Jiading, and a number of cantaloupe varieties suitable for cultivation in the eastern region have been selected, among which Xuelihong has become the leading Hami melon variety in this area. At the same time, through the form of "base + farmers", cantaloupe has been promoted to the majority of farmers, and has formed a set of relatively mature cultivation techniques in greenhouse. The cultivation techniques in greenhouse are introduced as follows:
I. Variety characteristics
Xuelihong, a thick-skinned melon bred by Xinjiang Hami Melon Research Center, is an early and middle-ripe variety with a fruit development period of about 40 days. The fruit is oval, the pericarp is white, occasionally has a sparse net pattern, and is red when ripe; the flesh is light red, the flesh is delicate, crisp and refreshing, and it melts in the mouth, tastes like fragrant pear, the central refractive sugar is more than 15%, and the single melon weighs about 2.5 kg.
2. Determination of sowing date
The best sowing time for spring greenhouse cultivation of cantaloupe in Shanghai is from late January to early February.
Third, cultivate strong seedlings
1. Seed treatment
The dried seeds can be dried and baked in a constant temperature drying box of 60-69 ℃ for about 3 days, and the disinfection and sterilization effect is good. If there is no such condition, the seeds can be dried in strong sunlight for 2 days.
2. Sowing seeds
When sowing, first, the bowl noodles should be flat, and the seedling bowls should be arranged closely; second, the seedling bed should be fully watered and sown after underwater infiltration; third, one seed per bowl, and the seeds should be laid flat; third, the soil should be covered in the same depth, with a thickness of about 1cm, and be gently compacted after sowing.
3. Seedbed management
Spring seedling breeding emphasizes heat preservation and disease prevention, the seedling bed is covered with multi-film, and the ground is covered with electric heating line.
Temperature management: adopt the method of "two high and two low" to change the temperature, that is, before emergence, the temperature of the seedling bed should be kept at 30: 32 ℃ during the day and 18: 20 ℃ at night to promote the seedling; before the first true leaf is unfolded, the bed temperature should be appropriately reduced, between 25: 28 ℃ during the day and 15: 16 ℃ at night, to prevent tall seedlings. When the third true leaf appeared, the bed temperature should be properly increased, keeping it between 30-32 ℃ during the day and 18-20 ℃ at night, in order to promote early emergence of true leaf, and low temperature seedling refining was carried out one week before planting to make the seedlings gradually adapt to the field environment.
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Prevention and control of rotting root disease of growing papaya seedlings
Papaya root rot disease, also known as papaya root rot symptoms, the disease is mainly harmful to the root neck and roots, seedlings in the seedling stage and planting soon are more susceptible to the disease. In particular, the high groundwater level or poor drainage in nursery land and cultivated land are easy to cause stagnant water and soil stickiness. Plant hair
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Management measures after planting cantaloupe
In the past two years, the planting area of Hami melon in Jiading District has gradually expanded, and the planting varieties have been continuously enriched. In 2007, a total of about 60 mu of cantaloupe were planted, and the main varieties were Xuelihong, 9818 and Xianguo. At present, the planting of cantaloupe has been basically completed. In order to ensure the normal quality of cantaloupe
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