Planting conditions of longan

Temperature requirements: longan is suitable for planting in a warm climate environment, the annual average temperature is about 21-23 ℃, and the winter temperature should not be lower than 0 ℃. Soil requirements: the soil requirements are not very strict, but prefer the sandy soil with deep soil layer, loose soil and good drainage. Moisture requirements: like moisture, but afraid of waterlogging, different growth stages need different moisture.

I. planting conditions of longan

1. Temperature requirement

(1) Longan is suitable for growing in warm climatic conditions, and can grow in areas where there is no frost or short-term frost in winter.

(2) the average annual suitable temperature for its growth is about 21 ℃-23 ℃, and the temperature should not be lower than 0 ℃ in winter. If the temperature is lower than 0 ℃, its seedlings will be frozen to death, and when the temperature is below-4 ℃, the adult plants will be frozen to different degrees.

(3) before planting longan, it is necessary to test whether the local temperature meets its growth needs.

2. Soil requirements

The main results are as follows: (1) the growth of longan is not very strict to the soil, and it can grow normally in barren, dry and acidic soil.

(2) if the surface layer of the soil is sandy loam and the bottom layer is clay land, the life span of longan planted will be shorter and the yield will be lower, so the economic benefit will be relatively poor.

(3) Longan is suitable to be planted in the soil with deep soil layer, loose soil and relatively good drainage.

(4) before planting, the soil can be ploughed first, and then applied organic fertilizer as base fertilizer, so longan can grow better and increase yield.

3. Moisture requirement

The main results are as follows: (1) Longan likes dampness but is afraid of flood and waterlogging. During the whole growth period, each growth stage of longan has different requirements for water.

(2) during the period from autumn shoot to spring shoot, longan needs less water, so it can accumulate more nutrients, which is beneficial to flower bud differentiation and flowering in the coming year.

(3) Longan needs more water from July to August in summer. If there is no water during this period, it will affect the growth of roots and branches of longan, thus affecting the overall yield and quality of longan.

(4) when the fruit is about to mature, longan has a very high requirement for water. Long drought, showers and droughts will cause fruit cracking and fruit drop of longan, so it is necessary to regulate and control the water content of longan when it is about to mature.

Second, how to increase the yield of longan trees

1. Select superior varieties

The main results are as follows: (1) the basic condition of longan planting is the selection of seedlings. If the quality of longan seedlings is relatively high, the survival rate and late yield will be much higher.

(2) at present, there are more and more varieties of longan in China, so we should select suitable seedlings according to local topography, soil and other conditions.

(3) after selecting the variety, we need to select high-quality seedlings, and high-quality seedlings generally choose seedlings with developed roots and strong vitality.

2. Cultivation and management

The main results are as follows: (1) the selected longan seedlings should be pruned reasonably before they can be planted.

(2) when planting, the longan saplings should be fully stretched, then straighten the saplings by hand, and then backfill with soil.

(3) after the soil is backfilled, the compaction side of the ground soil should be watered. During compaction, you can not use a hoe or other tools. You can only step on it with your feet.

3. Flower and fruit management

(1) the longan should be managed scientifically during the flowering and fruiting period, so as to ensure the yield and quality of longan.

(2) in the flowering stage, topdressing should be carried out properly to prolong the flowering period, so as to improve the pollination rate of longan. In the full bloom of longan, it is necessary to properly remove some residual flowers, disease and insect flowers, so as to improve the fruit setting rate.