The same is the case of eggplant cultivation. The income of different farmers is often very different. In addition to the differences in varieties and planting patterns, the scientific application of fertilizers directly determines the output of eggplant. For example, when the application of nitrogen fertilizer is insufficient, the leaves of the lower leaves of eggplant plants are yellowish in color, aging and falling off, the main stems and branches are weak, the long column flowers are reduced, the flowering amount is small, and the flowering result period is delayed, the result rate is decreased, and the yield is reduced. Severe; when the application of phosphorus deficiency, nitrate-nitrogen in the eggplant plant in the reduction process was blocked, resulting in protein degradation in vivo, so that flower bud differentiation was significantly delayed, flower buds differentiation stage significantly increased, the amount of flowers reduced, resulting in reduced production; when applied to potash Insufficiently, the upper leaves of the middle and upper leaves of the eggplant plant are yellowed, the leaf area is small, and the leaf veins are chlorogenic, which will reduce the yield and affect the quality. Therefore, it is necessary to optimize the fertilization scheme in accordance with the target yield of eggplant.
First of all, it is necessary to clarify the eggplant's fertilizer requirements. The eggplant has a long growing period, lots of lots to be harvested, and requires a large amount of fertilizer, but it has poor fertility and cannot be over-fertilized once. According to the measurement, for every 1,000 kg of eggplant produced, 3.2 kg of nitrogen, 0.94 kg of phosphorus pentoxide and 4.5 kg of potassium oxide are required. The requirements for nitrogen, phosphorus, and potassium are gradually increased with the extension of the growing period. It should be applied according to the demand ratio in batches.
Second, formulae balanced fertilization. As the growth of eggplant plants is relatively strong, the root system is relatively developed, and the absorption of fertilizers is rapidly transformed. As long as the scientific application of the stages, there is a great potential for increasing the yield. Basal fertilizer is about 4,000 kilograms of manure per acre, or 75-100 kilograms of bio-organic compound fertilizer, with a total of 25 kilograms of compound fertilizer and 5 kilograms of potassium sulfate. After transplanting eggplant, seedlings need to be controlled by seedlings. The door eggplant enters into the expansion period, and each person can use 700 to 1,000 kilograms of human fecal urine or 8 to 10 kilograms of urea. After the second harvest of the door, the tomato was harvested, applying 10-15 kilograms of urea per mu and applying 5 kg of potassium sulfate. In the early stage of eggplant harvesting, 10 kg of compound fertilizer is required per acre. During the expansion of eggplant, 0.2% potassium dihydrogen phosphate and 1% urea can be sprayed on the roots.
Third, pay attention to fertilization methods. First, the basal fertilizer must be deepened. Because the eggplant's drought resistance is weak, it is necessary to deeply plow deep-fertilizer in order to guide the root system to extend deep into the soil and increase the capacity of water absorption and absorption. The decomposed organic fertilizer can be applied to the ground surface first and then plowed and buried deeply. The phosphate fertilizer can be mixed with organic fertilizers to avoid being immobilized by soil and difficult to release. The second is the application of bio-organic fertilizer or organic compound fertilizer or ternary compound fertilizer, should be ditching or playing points concentrated application, after the application of cover soil, irrigation, water transfer, fertilizer to the water, and fully improve the utilization of fertilizer.
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