Early application of base fertilizer has great benefits

The branches of kiwi fruit stop growing after the fruit is picked, and the root system enters the growth stage.

After the fruit is picked, it consumes a lot of nutrients, and it is urgently needed to supplement the roots for nutrient absorption. However, when the temperature is low in autumn, the branches and vines have stopped growing, and the nutrients absorbed in the base fertilizer can be stored in the roots and branches to provide for spring growth;

Kiwi flower buds are fully differentiated in one month when spring comes. At this time, due to low soil temperature, root absorption is low, mainly relying on the nutrient supply in the branches after fertilization in autumn;

Part of the damaged roots after fertilization in early autumn can be quickly healed at the appropriate soil temperature; after the fertilization process, the soil is loosened, and the winter is conducive to freezing dead bacteria and insect eggs, which is another good cleaning of the garden.

When to apply base fertilizer

Kiwifruits are divided into two categories in terms of maturity. Chinese kiwifruit varieties generally mature in the middle and late September, and kiwifruit varieties mature late and are generally harvested in mid-October. The time of fruit picking determines the time of fertilization. For Chinese kiwifruit varieties, it is recommended to apply fruit fertilizer from late September to early October. For kiwifruit, it is more appropriate to recommend fertilizer application from late October to mid-November, but it should not exceed November. In December, the soil temperature may drop. It is not suitable to fertilize the roots in snowy weather.

Base fertilizer

The principle of fertilization is to achieve formula fertilization. It is recommended to use the following formula and apply it immediately after picking the fruit. Cow dung, sheep dung, chicken dung after decomposed organic fertilizer can be added with oil residue if possible. Apply 40 kg of organic fertilizer + pure bacterial fertilizer for 1 plant with 40 kg of fruit, 1 plant of 1.5～2 kg + compound fertilizer 0.5～1 kg + mineral trace elements, 0.25～0.5 kg of fertile soil; apply it after complete mixing or choose organic Inorganic biological fertilizer 1 plant of 1.5-2 kg + 0.25-0.5 kg of fertile A. These two formulas have clearly seen their effects in production. A single chemical fertilizer should be used in a limited amount in the production of pollution-free kiwi fruit.

Fertilization method should be changed

The tree canopy is closed in autumn. Sprinkle the mixed formula fertilizer throughout the garden and apply a disc harrow to a depth of 20 cm. Do not apply around the main pole; unclosed trees can open ditch, ring ditch and ditch outside the capillary roots and apply the mixed fertilizer to cover the topsoil; no matter which method is applied, the soil moisture should be timely Water thoroughly, and do not water when the moisture content is good; in early autumn fertilization, the amount of fertilizer should be determined according to the type and composition of fertilizer, soil conditions and yield. The above-mentioned ratio is for reference, and the required amount of various fertilizers can be converted during application, which is reasonable Carry out formula fertilization.

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