With greenhouses for eggplant production, high yields and high prices, growers can get very good economic benefits. Prices are controlled by the market, and human factors are difficult to control. However, we can increase the output of eggplant through reasonable and effective methods of fertilization. At the same time, we can improve the quality of the products by looking at the phase, selling the phase, and taste, reducing costs, and greatly increasing economic efficiency. The soil and environmental conditions in the greenhouse are different from those in the open field, and therefore there are also great differences in fertilization methods. Here is a detailed introduction to the fertilization method for whole eggplant growth period.
First, the seed. In order to obtain higher yields, it is necessary to start from “small†and it is also important to fertilize the seeds. The fertilization of seeds mainly refers to the use of microbial fertilizers and seed dressing. Bacterial fertilizer seed dressing can not only ensure the nutrient required for seed germination, but also can provide a good soil environment for the germination of seeds, which is conducive to raising seedling rate and cultivating strong seedlings. Two problems should be paid attention to when dressing seedlings with bacteria: 1. Use qualified quality of fertilizer. The inferior bacteria fertilizer is harmful to the seeds and it is useless. Do not use it. Should choose to have a reliable technical background and technical sources, quality and performance of a stable fertilizer, such as gold baby bacteria fertilizer. 2, minimize the death of microorganisms. Fertilizer should avoid direct sunlight, and should be operated in the shade during seed dressing. Seed should be sowed immediately after dressing, and immediately cover soil. Fertilizer can not be mixed with harmful pesticides and chemical fertilizers.
Second, seedling period. The growth of seedlings can affect the whole growth period of eggplant, especially for flower bud differentiation. Therefore, nurturing strong seedlings is the key to achieving high yields and cannot be ignored. Phosphate fertilizers applied at the seedling stage (mycorrhizal fungi can greatly increase the utilization of phosphate fertilizers) can lead to earlier results. 9 square meters of seedbed can be applied to screen organic fertilizer 200 kilograms (preferably fermented organic fertilizer), 0.5 kg of superphosphate and potassium sulfate; If the lower leaves are light in color, they can be sprayed with 0.1% to 0.2% of potassium dihydrogen phosphate or urea, which can guarantee the development of strong seedlings.
Third, base fertilizer. Eggplant grows for a long period of time, with deep roots and leaves. It is a vegetable crop that requires more fertilizer and more fertilizer. Applying base fertilizer is the basis for high yield. If greenhouses are covered with plastic film, most fertilizers should be applied as base fertilizer because of the inconvenience of top dressing. The amount of fertilizer used in the old shed and the new shed is different. Because the old shed has more residual fat than the new shed soil, the new shed will be more fertilized than the old shed. Most of the old shed soil has excess nitrogen, phosphorus is rich, and potassium is insufficient. Apply 6,000 kg of organic fertilizer per 667 square meters. If it is an old shed, the application amount can be reduced and 20 to 30 kg of potassium sulfate can be added. Organic fertilizer and potash fertilizer should be fully applied and then turned into soil. Special attention should be paid to the fact that the organic fertilizer must be fully decomposed and it is best to treat it with a specialized starter. Not only can reduce the loss of nutrients, but also can completely remove organic bacteria harmful bacteria, eggs and other harmful substances. It is even better if it can be combined with microbial fertilizers.
Fourth, top dressing. The top dressing of eggplant should be based on available nitrogen fertilizer, with phosphate and potassium fertilizers, and appropriate amount of biological bacteria fertilizer. According to the growth period of eggplant, it can be divided into priming fruit fertilizer, fruit fertilizer and starry fertilizer.
1. Promoting Fruit Fertilizer: When the "Doimon" reached the "window-opening period", the fruits began to grow rapidly and the whole plant entered the period when fruit growth was dominant. The stems and leaves also begin to thrive and require more fertilizer. At this time, the first topdressing is called detoxification, which is the key period of fertilizer application. The amount of replenishing fruit fertilizer should be 30-40 kg of ammonium sulfate per 667 square meters, or 15-20 kg of urea.
2, Sheng fruit fertilizer: When the "swallow" fruit enlargement, "Saimendou" began to develop, it is the peak period of eggplant fertilization, and then the second top dressing, that Sheng fruit fertilizer. With quick-acting nitrogen fertilizers as the main component and phosphorus and potash fertilizers, it is also necessary to pay attention to the application of medium-sized and trace element fertilizers such as calcium, boron and zinc on the foliage. In combination with watering, 1,000 kg of diluted dilute urine or 20-30 kg of diammonium phosphate is applied per 667 m2.
3, the sky star fertilizer: the second time after the top dressing to the first harvest 10 days before, when each layer of fruit began to expand, about every 10 days chase 1 times, a total of 5-6 times the fat. Fertilizer and dilute urine are best used interchangeably.
4. Extra-root fertilizer: From the beginning of the outcome period, 0.2%-0.3% urea, 0.2%-8.3% potassium dihydrogen phosphate, 0.1%-0.2% magnesium sulfate and other fertilizers can be sprayed according to growing conditions. Usually 7-10 days, even spray 2-3 times.
5. Microbial bacterial fertilizer: Qualified biological bacterial fertilizer not only contains a large number of nitrogen-fixing, phosphate-solubilizing and potassium-releasing active bacteria, but also contains organic matter, humic acid and trace elements. In combination with other fertilizers, it will not only save the amount of fertilizer used, but also solve soil compaction and increase soil microbial content.
Through the above methods of fertilization, it is believed that the majority of growers can obtain more ideal output, so as to achieve the purpose of increasing production, improving quality and increasing income.
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