Kiwi likes warmth, fertilizer and light, afraid of drought and flood, frost and strong winds. Kiwi has fleshy roots, shallow root system, well-developed and dense fibrous roots, mostly distributed horizontally. The root system of mature kiwifruit plants is mainly concentrated in the soil layer of 20~60cm.
Kiwi is afraid of drought and cannot tolerate waterlogging, so water management is particularly important.Drought prevention in summer and autumn season and drainage and waterlogging prevention during the "rainy season" are the keys to management.
The most suitable soil humidity is 65-85%.
Key water demand time nodes: budding period, before flowering, after flowering, fruit expansion period,and winter dormancy period.
Pre-flowering fertilizer - to promote budding and flowering, mainly nitrogen fertilizer, the amount of fertilizer accounts for about 10% to 20% of the annual dosage.
Post-flowering fertilizer - to promote the growth of young fruits, mainly nitrogen fertilizer, the amount of fertilizer accounts for about 10% of the annual dosage.
Fruit expansion period - fruit-strengthening and shoot-stimulating fertilizers, nitrogen, phosphorus and potassium are used together to improve photosynthetic efficiency, increase nutrient accumulation, promote fruit enlargement and flower bud differentiation, and the amount of fertilizer accounts for 20% of the annual nitrogen, phosphate and potassium fertilizer dosage respectively.
Excellent fruit fertilizer---in the late growth period of the fruit (6 to 7 weeks before the maturity period),phosphate fertilizer and potassium fertilizer are mainly used to facilitate the accumulation of nutrient transport and promote quality improvement. The amount of fertilizer accounts for 20% of the annual phosphate fertilizer and potassium fertilizer consumption respectively.
Foliar fertilizer---low concentration, quick-acting fertilizer, small amount and multiple times, 7 to 8 times a year. In addition, trace elements such as manganese, boron, molybdenum, and zinc need to be supplemented after fruit thinning, which can increase the photosynthetic rate, enhance leaf respiration,increase nutrient accumulation, and promote fruit hypertrophy and flower bud differentiation.
