The plastic greenhouse eggplant is mainly cultivated in early spring, and the seedlings are mostly raised in the solar greenhouse electric hotbed. When the eggplant seedling grows to 4 to 5 true leaves, if the lower leaves are lighter in color, 0.1% to 0.2% of potassium dihydrogen phosphate or urea may be sprayed on the foliage. Generally, when the seedlings grow to 8 to 9 true leaves, they are planted with flower buds. Eggplant is a fertile crop with a long growing season and a long period of time. The yield is high and the amount of fertilizer is large. Therefore, the base fertilizer must be applied before planting. However, the amount of fertilizer applied in the old shed and the new shed should be different. Because the old shed has more fat than the new shed soil, the new shed is more fertilized than the old shed. How much to apply is related to the target yield, the effective nutrient content of the fertilizer, and the nutrient content that can be provided in the greenhouse soil. After measurement, most of the old shed soil has excess nitrogen and phosphorus fertilizer is enriched. Under the condition of potassium fertilizer, 6000 kg of organic fertilizer is applied per 667 square meters. If it is used in the old shed, the application amount can be reduced, and 20-30 kg of potassium sulfate is applied. Organic fertilizer must be fully decomposed. Organic fertilizer and potassium should be fully applied, then turned into the soil, pay attention to the manure and soil to be fully mixed, break up the clods, level the land, ridge or do sorghum, prepare for colonization. Fertilization is generally not required after planting until the flowering period, and the cultivation management is mainly temperature management. The flowering period is thicker, the internodes are shorter, the leaves are larger, the flower buds are larger, the leaves are shiny, and the roots are developed to be the prolific appearance; if the stems are thin, the leaves are small, the color is light, and the flowers are small, indicating the carcass Weak, often caused by lack of fat. At this time, 0.2% urea or potassium dihydrogen phosphate can be sprayed on the foliage. After sitting on the stalk, apply 20 kg of ammonium sulphate per 667 square meters, ditch or hole application. After harvesting the cigar, 15 kg of urea or 1000 kg of large manure can be applied with the water. The entry of the eggplant into the harvesting period indicates that it has entered a period of vigorous growth. During this period, water should be poured every 7-8 days, every time the water is applied once, organic fertilizer and fertilizer are used alternately. The application amount is 15-20 kg of ammonium sulfate or 1000 kg of large feces. After the harvest of the eggplant, 10 kg of potassium sulfate should be added to supplement the deficiency of potassium in the soil.
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