Detailed Explanation of Pineapple Cultivation Environmental Requirements and High-Yield Cultivation Techniques

Pineapple is one of the seasonal fruits of summer. Its nutritional value and edible value are extremely high, and it is a fruit with excellent economic benefits. Pineapple is a perennial herb with strong adaptability and robust growth, and it yields returns in the same year of planting, attracting many people to grow it. Below we introduce the environmental requirements and high-yield cultivation techniques for pineapple.

I. Environmental Requirements for Pineapple Cultivation

1. Soil Requirements

Pineapple has strong adaptability to soil, but its root system is relatively shallow, so the planting soil is best a loose, fertile, well-drained sandy soil or mountain red soil; soil with heavy stickiness and poor drainage is not suitable. It also has a strict requirement for soil: pH. Pineapple prefers acidic soil and avoids neutral and alkaline soil; neutral and alkaline soil will cause poor growth. The suitable soil pH is between 4-5.5.

2. Temperature Requirements

Since it is a tropical fruit, it likes warm and humid zones. The suitable growth temperature is 15-40 degrees; below 15 degrees, growth is slower; below 10 degrees, growth stops; and below 5 degrees, it suffers freezing damage. It has different temperature requirements at each growth stage. When inserting suckers, the temperature should be maintained at around 23 degrees, which is favorable for sprouting, and appropriate shading is also needed. The suitable temperature for root growth is around 30 degrees. If it is higher than 40 degrees or lower than 5 degrees, growth will stop. In winter, attention should be paid to heat preservation measures to avoid freezing damage.

3. Light Requirements

Pineapple originated in tropical rainforest areas and can tolerate partial shade, but during artificial cultivation it is necessary to ensure sufficient light duration so that it grows well, accumulates sugar quickly, and achieves high yield and quality. If light is insufficient, growth and development will be poor, with low sweetness, high acidity, and poor quality. Generally, for every 20% reduction in light, yield decreases by 10%. Although sufficient light is needed, during high summer temperatures, intense sunlight can scorch the leaves and cause discoloration, and the fruit is also easily scorched, so attention should be paid to shading and sun protection.

4. Water Requirements

Pineapple has extremely strong drought tolerance, but it still needs a certain amount of water during the growth stage. It is suitable for growing in areas with annual precipitation of 500-2800mm, and the main planting areas in China can all meet its water needs. It can regulate itself: when lacking water, it reduces transpiration to decrease water consumption; when severely lacking water, the leaves change from green to red-yellow, and at this time watering and irrigation are needed to prevent the plant from dying. In areas with abundant rain, excessive soil water accumulation makes it prone to disease infection and root rot, so drainage should be carried out promptly after heavy rain.

II. High-Yield Cultivation Techniques for Pineapple

1. Site Selection and Orchard Selection

Pineapple is a tropical fruit and likes warm and humid areas. In addition, it prefers loose, fertile, well-drained and breathable slightly acidic soil, and is not suitable for planting in neutral or alkaline soil; the pH is best between 4-5.5. It is generally planted on leeward, sunny, open and flat plots, which can reduce wind damage, lessen soil erosion, and also facilitate transportation and mechanized management. When establishing an orchard, ditches must be dug and a drainage system prepared. When preparing the land, plow the soil deeply and harrow it fine. If it is a hillside with a relatively large slope, terraces with a gradient must be built to conserve soil and water.

2. Planting Management

Reasonable close planting is a key point for achieving high yield in pineapple. Planting density should be determined according to the pineapple variety and planting conditions. Proper close planting can both increase the number of plants and improve leaf photosynthesis, promoting high yield. Generally, single-row planting is used on plots with relatively large slopes, with about 3,000-4,000 plants per mu, and plant-row spacing controlled at 30*120cm. Besides single-row planting, there are also double-row planting and triple-row planting, which can be chosen according to local conditions. Before planting, sufficient base fertilizer must be applied; plots with base fertilizer have higher yields than those without. The planting principle for pineapple is deep plowing and shallow planting, and the soil cover should not be too deep.

3. Cultivation Management

Cultivation management mainly includes fertilizer and water management, weeding, and pruning. Pineapple has a relatively high demand for potassium during growth, so potassium fertilizer should be appropriately increased. When fertilizing, nitrogen fertilizer is the base; in the early stage, nitrogen fertilizer is primary and potassium fertilizer is supplementary, while in the later stage it is the opposite. After planting, pineapple needs weeding 4-5 times per year to ensure smooth growth and prevent weeds from competing for nutrients. During the bud stage of pineapple, to ensure the next year's yield, some of the plant's buds can be cut off, leaving some strong buds, to avoid excessive nutrient consumption and prepare for fruiting the next year.

4. Pest and Disease Control

Pests and diseases are also reasons affecting pineapple yield. To achieve high and excellent pineapple yield, pest and disease control is indispensable. The main pineapple diseases are wilt disease and heart rot. Wilt disease mainly harms leaves, making them soft and drooping and turning the leaves red; heart rot mainly harms seedlings, causing the seedling heart to rot and the plant to die. Both can be controlled with chemicals. Wilt disease can be controlled by spraying 500-fold dimethoate solution; heart rot can be controlled by spraying carbendazim. When sunlight is intense, appropriate shading and sun protection should be provided.