The sowing time of eggplant is determined by the colonization period and the seedling age. The appropriate sowing period is the artificially determined date of the planting period minus the seedling age. According to the production plan, local climatic conditions, seedbed equipment, breeding techniques and species characteristics and other specific circumstances to determine. For example, in the early spring cultivation of open field eggplant, planting in the northeastern region after May 10 requires 80-90 days of seedling age, and the nursery time should be in mid-February. Also consider the nursery technology and the conditions of the facilities. Such as plastic seedlings or nutritious soil blocks large seedlings can be sown earlier. Otherwise, a small area of ​​nutrition will cause the seedlings to grow or grow slowly when transplanted, which will affect early production. When using electrothermal hotbed nursery, seedlings grow fast, when the seedlings are of the same size, they are shorter than the seedlings needed for common nursery seedlings. Therefore, the sowing date can be appropriately delayed. In short, the determination of the sowing date must be fully considered in order to ensure timely planting. Identify the quality of eggplant seeds Seeds with yellowish and bright seeds are good seeds. The plump seeds are fine seeds; results are late late fruits or poorly developed fruits, poor seed development, and poor fullness. The higher the seed size and uniformity, the better the purity and quality of the seed. The purity of the seeds is generally expressed as the percentage of the total weight of the tested seeds after removing the impurities and the weight of the pure seeds after the weight of the seeds, and the purity of the excellent seeds should not be lower than 98%. Seed germination, at least 100 seeds were placed in a suitable germination environment, germination, budding within 6 days and the budding is more excellent as a good seed; 10 days after the germination rate reached 90% -98% for the excellent seeds. Determination of the amount of eggplant sowing should follow the following principles Seeding rate. Sowing amount should be appropriate when sowing. Inadequate seeding, sparse emergence, waste seedbeds; too much sowing, too many seedlings, will be a waste of seed and increase the use of seedlings. How much seeding rate should consider the seed germination rate, the degree of clarity and the rate of seedlings. The number of seeds per gram of eggplant is 200-250, and the number of seedlings per 1 square meter is 2000-2500. If it is a nursery for seedlings, the seeding rate for 1 square meter is 15-20 grams. Sowing amount per acre. Under normal circumstances, the seeding rate is calculated and the effective seedling emergence rate is 90%, and the seedling safety factor is 1.2. Calculated with a grain weight of 4.5 grams, the minimum seed amount is 20 grams per 667 square meters of land planted. However, it is inevitable that there will be some losses during the seedling raising process, and the seedlings will be planted after planting. Therefore, usually 20% to 30% of the spare seedlings are used, so that the seeding amount can reach 25-30 grams. Our mission: To protect the health of ear, throat and nose with medical frontier knowledge and technological innovation. Electric Nasal Aspirator, Breast Pump, Inverted Nipple Corrector Ningbo Jiamai Internet Technology CO., Ltd. , https://www.jmcuhyd.com
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Determination of sowing date and seeding rate of eggplant
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