How to fertilize kiwifruit scientifically?
How to fertilize kiwifruit scientifically? Please introduce that kiwifruit grows fast, bears early fruit and consumes a lot of nutrients. Reasonable fertilization is needed every year to meet the requirements. (1) fertilization time: kiwifruit is generally fertilized once a year, topdressing 2-3 times. Base fertilizer: generally applied after harvest before defoliation. The time is from October to December. Mainly organic fertilizer, properly combined with phosphorus, potash fertilizer and available nitrogen fertilizer or human feces and urine, etc. Sprout fertilizer: from the end of February to the middle of March before sprouting. Sprouting fertilizer is mainly available nitrogen fertilizer to promote shoot growth and improve fruit rate. Strong fruit fertilizer: also known as summer fertilizer, carried out from May to July. Apply nitrogen fertilizer and potassium fertilizer, combined with extra-root topdressing, spray 1-2 potassium dihydrogen phosphate. This fertilizer is the most important fertilizer of the year. (2) the amount of fertilization: the amount of fertilization is directly related to tree age and annual yield. Generally, 56 1-year-old trees planted per mu apply 100g of urea, 125g of phosphate fertilizer and 345g of potash fertilizer per year, 300g of urea, 375g of phosphate fertilizer and 1035g of potassium fertilizer per 4-year-old tree, and 650g of urea, 835g of phosphate fertilizer and 2070 g of potash fertilizer per 8-year-old tree. At the same time, a certain amount of organic fertilizer should be buried every year to ensure an adequate source of fertilizer. Kiwifruit avoid chloride, when the concentration of chloride ion in the soil reaches 700 mg / kg, it will be toxic to the plant, so we should try to avoid the application of fertilizer containing chlorine (such as potassium chloride). (3) fertilization methods: ring ditch application, radial furrow application, strip application and sprinkling are commonly used. Click to get more kiwifruit planting techniques click to get more fruit planting techniques
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How to manage kiwifruit in summer?
How to manage kiwifruit after bagging? Please introduce kiwifruit bagging and pay attention to: first, regularly check the bagging fruit growth, investigate and record the fruit growth and diseases and insect pests, and take corresponding countermeasures in time to find broken bags and change them in time. Second, timely irrigation weather long-term drought, fruit.
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What will happen to kiwifruit due to nitrogen deficiency?
How to prevent and cure yellowing of kiwifruit? Please guide kiwifruit chlorosis is actually iron deficiency chlorosis. Iron is necessary to maintain the function of chlorophyll. The initial symptom of iron deficiency is yellowing or chlorosis of young leaves, but it is not certain that iron deficiency continues to develop, which in turn makes the leaves white and white.
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