A Detailed Guide to Wax Apple Growing Conditions and Cultivation Methods
SummaryTemperature: The suitable temperature is between 25-30°C. Light: 2000-2500 hours of sunshine per year can meet growth needs. Water: Annual rainfall above about 1500 mm, and soil water-holding capacity of about 60%-80% is appropriate. Soil: Suitable for sandy soil and clay soil with a pH value of 5.5-7.8, with loose, fertile, slightly moist, slightly acidic soil being best. Wind: Avoid dry hot winds and strong winds.
I. Temperature
1. Wax apple prefers warmth and fears cold; the general suitable growth temperature is 25-30°C, and below 10°C it easily causes growth to stop or slow down.
2. Below 8°C, it easily causes flowers and fruit to drop; at -4°C, when the wax apple is in an extreme low-temperature situation, obvious cold damage symptoms appear, and it easily causes injury and freezing to the wax apple.
3. During the growth and fruiting period, a daytime temperature of 25-30°C and a nighttime temperature of 18-22°C are best; when the temperature is relatively high during flowering and the young fruit stage, the wax apples produced are usually high-yielding and of good quality.
4. In addition, wax apple is relatively sensitive when encountering frost; low-temperature weather lasting 3-5 days causes branches and leaves to freeze and die, so wax apple is mostly planted in winter and spring, and insulation measures are used for cold protection.
II. Light
1. Wax apple prefers light; only 2000-2500 hours of sunshine per year can meet the basic light requirement, which helps promote flowering and coloring and improve quality.
2. When light is insufficient, it easily causes poor fruit coloring, excessive vegetative growth of branches and leaves, and breeding of pests and diseases; when light is too strong, it easily causes sunburn damage to the fruit, and proper pruning can control light.
III. Water
1. Wax apple fears both drought and waterlogging; it prefers a high-temperature and humid environment for high yield and abundant fruit. When there is too little water, water shortage during the sprouting stage will delay sprouting and produce weak seedlings.
2. Water shortage during the flowering stage will shorten the flowering period and reduce flower bud differentiation, affecting the fruit-setting rate; water shortage during the development stage will make the fruit small and poor in quality; when a long drought is followed by sudden rain, fruit drop and fruit cracking occur, and long-term severe water shortage will cause branches and leaves to wilt and lead to death.
3. When there is too much water, it affects flowering and fruiting, lowers quality, and induces various pests and diseases; in severe cases, it easily causes root rot and death, so attention should be paid to drainage and irrigation, and it should not be planted in low-lying areas that are prone to waterlogging.
4. The water content of wax apple fruit should exceed 90%, and the average water content of organs such as branches, leaves, and rhizomes should exceed 50%.
5. The annual rainfall for wax apple should exceed 1500 mm to favor growth and development; for areas with insufficient or uneven rainfall, water conservancy facilities should be built to ensure water supply.
6. A soil water-holding capacity of 60%-80% is most suitable for wax apple, and can promote root nutrient absorption and water transport.
IV. Soil
Wax apple can be planted in various soils such as sandy soil and clay soil with a pH value of 5.5-7.8, and loose, fertile, slightly moist, slightly acidic soil is especially best; for soil that is heavy in clay, too thin in soil layer, or has a high groundwater level and is too acidic or too alkaline, soil improvement must first be carried out before wax apple can be planted.
(1) For soil with severe infertility, soil fertility should first be cultivated, such as by planting green manure and increasing the application of organic fertilizer.
(2) For soil with a pH value below 5.5, the soil acidity and soil physical properties should first be improved; an appropriate amount of lime or dolomite powder can be applied to stimulate activity and increase mineral availability.
(3) For soil with a pH value above 7.8, sodium ions that are not beneficial to the soil should first be replaced; an appropriate amount of gypsum can be applied combined with irrigation and leaching.
(4) In cases of severe alkalinization, in addition to gypsum, other chemical substances can also be used for adjustment, such as phosphogypsum, sulfur, phosphogypsum, potassium aluminum sulfate, phosphogypsum, ferrous sulfate, etc.
V. Wind
(1) Generally, under normal conditions, a breeze is beneficial for gas exchange in the planting site, enhancing photosynthesis and nutrient accumulation, and reducing pests and diseases.
(2) When light is strong, a breeze helps lower leaf temperature to prevent leaf sunburn.
(1) During the flowering stage, dry hot winds or strong winds are not conducive to pollination. For example, in tropical storm areas, strong winds and tropical storms often strike, damaging branches, twigs, and stems and causing fruit drop, and in severe cases uprooting the tree. It can thus be seen that to plant high-quality wax apple, a wind-sheltered and sunny location should be selected for planting.