How many years can the pomelo tree live?

Hongxin honey pomelo, also known as red flesh honey pomelo, red meat pomelo, red meat pomelo, blood pomelo. It was found by the Fruit Tree Research Institute of Fujian Academy of Agricultural Sciences in 1998 that the fruit juice sac was red in the pomelo orchard of Lim Kim San Guanxi in Cuoqiu Village, Xiaoxi Town, Pinghe County. So how long can the red-heart pomelo tree live?

1. How many years can the red-heart pomelo tree live

If it is not grafted, it can live for more than 200 years, but only 50 or 60 years have been grafted. By planting large seedlings, flowers can be seen in the second year, fruit can be hung in the third year, and the average plant yield can reach about 15 kg, 30 kg in the fourth year, 55 kg in the fifth year, and 4000kg / mu in the peak yield period.

2. Key points of cultivation techniques of red-heart grapefruit.

1. Establishment of pomelo orchard: choose to build a garden in the sandy loam zone with shelter from the wind and the sun, rich water, deep and fertile soil.

two。 Seed selection: the grafted seedlings with developed root system, strong growth and one-year-old seedlings are selected for planting. Under better management conditions, the seedlings can resume growth quickly and the crown is formed faster.

3. Expanding holes and improving soil: an important measure to improve land conditions is the basis of early fruit, high quality and high yield. Hole expansion and soil improvement generally begin in the second year after planting, and the effect is the best in the third year. The specific method is to symmetrically dig 60-70cm deep and 40 70cm 50% wide cm trenches on both sides under the crown dripping line, fill in a load of green manure and burnt soil, 1.5kg calcium magnesium phosphate fertilizer, appropriate amount of lime and topsoil, layer by layer, compaction to improve the soil.

4. Reasonable pruning: thinning branches, more cutting of the outer branches of the crown and less cutting of the inner branches. ① pruning time: young pomelo trees are generally pruned twice, that is, summer pruning and winter pruning; results pomelo trees are generally pruned three times (spring pruning, summer pruning and winter pruning), spring pruning is from February to March, summer pruning is from May to July, and winter pruning is half a month after fruit harvest, that is, October to November. ② pruning method: do not use "one size fits all" method, focus on thinning the outer branches, and "open skylight" pruning method can be used for dense canopy. This method can effectively control the crown and promote the germination of inner bore branches without reducing the yield due to heavy cutting.

5. Fertilization method: using annular ditch application, fertilization times according to the requirements of "autumn application of base fertilizer, careful application of budding fertilizer, combined application of fruit protection and strong fruit fertilizer", fertilizing 3 times a year for 4 times. Mainly with rotten organic fertilizer, supplemented by inorganic fertilizer, and apply more phosphorus and potassium fertilizer.

6. Reasonable fruit thinning: first, the malformed fruit, small fruit and disease and insect fruit should be thinned, and the ratio of leaf to fruit should be (160: 200): 1.