Pineapple fertilizer should pay attention to nitrogen and potassium supply
The high yield of growing pineapple needs a whole set of scientific fertilization technology to guarantee. Among them, the key technologies of base fertilizer and topdressing are the most important. The ratio of nitrogen, phosphorus and potassium in the vegetative growth period is 17:10:16 and the flowering stage is 7:10:23. Therefore, attention should be paid to the supply of nitrogen and potassium in pineapple fertilization. the application of sufficient basal fertilizer will lay a good foundation for high yield. According to the southern climate and the fertilizer demand characteristics of pineapple, the scientific fertilization measures are suggested as follows: base fertilizer: the one-time application of sufficient base fertilizer in the dry and barren soil of pineapple is the basic measure for high yield and quality of pineapple. It is suggested to use high tower sulfur fertilizer 15-15-15 or 17-17-17. Topdressing: topdressing with high tower sulfur base fertilizer 15-15-15, 17-17-17 or nitro-sulfur fertilizer 21-6-13 at seedling stage. The application of nitro fertilizer 15-5-20, sulfur-based fertilizer 18-5-25 and 16-6-24s had a good effect on fruit expansion and fruit quality. Farmers can adjust the specific use of fertilizer according to local varieties and fertilization habits. Welcome to consult local agricultural technicians.
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It is the right time to apply potassium to pineapple
At present, the pineapple winter fruit has entered the rapid expansion and color-changing maturity period, and there is a large demand for potash fertilizer. if the potash fertilizer supply is sufficient, the pineapple winter fruit can expand rapidly and fully mature, the fruit is large, the fruit shape is correct, the fruit is full, the pulp is sweet, the fruit juice is rich, the aroma is strong, the color is good, the pericarp is golden, and it is resistant to storage and transportation. No.
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Control of pineapple pink scale
The scientific name Dysmicoccusbrevipes (Cockerell) of pineapple pink scale belongs to Homoptera, Coccidae. Pineapple pink scale is the most common. The symptom of damage is that adult and nymph damage pineapple rhizome, leaf, fruit and seedling to suck its juice. The damaged leaves begin to show symptoms from the lower part, gradually fade upward and turn yellow at last.
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