The Survey Of Crown Of 'Guiwei', 'Jizuili' And 'Nuomici' Litchi From Different Area

This study selected 'Guiwei', 'Jizuili' and 'Nuomici' for the survey of annual growth in different area. The contents of nutritional compounds were investigated to establish the relationship between annual growth and fertilization.1, 'Guiwei' is mainly cultivated in Guangdong, Guangxi, Fujian, Yunnan and Sichuan provinces, and the total planting acreage was about 34, 700 ha. 'Nuomici' is also distributed in the five provinces, and the planting area is about 21,000 ha. 'Jizuili' is mainly planted in Guangdong and Guangxi provinces with 9,700 ha of planting acreage.2, The investigated 'Guiwei' plants are mostly about 15 years-old trees, and the average crown diameter of the tree is about 5.2 m, and the average crown surface area is 46.8m2. By2016, the average crown diameter of the tree is about 5.1 m, and the average crown surface area are 46.8 m2. In 2015, the annual average per square the average number of shoot-meter crown is 41.4, and average total number of shoots per plant end is 1795.3, and the total length of the autumn shoots averaged is 23.7cm, and growth times of shoot of elderly tree is mostly twice as three times of young tree, and the average number of leaves is 15.5, and average length of spikes is 18.7cm. By 2016, the annual average per square the average number of shoot-meter crown is 41.4, and average total number of shoots per plant end is1795.3, and the total length of the autumn shoots averaged is 23.7cm, and growth times of shoot of elderly tree is mostly twice as three times of young tree The average number of leaves is 15.5, and average length of spikes is 18.7cm.3, The investigated 'Jizuili' plants are mostly about 10 years-old trees, and the average crown diameter of the tree is about 6.2 m, and the average crown surface area is 59.1 m2.By2016, the average crown diameter of the tree is about 5.4 m, and the average crown surface area are 51.5 m2. In 2015, the annual average per square the average number of shoot-meter crown is 59.9, and average total number of shoots per plant end is 3102.8, and the total length of the autumn shoots averaged is 19.6 cm, and growth times of shoot of elderly tree is mostly twice as three times of young tree, and the average number of leaves is 13.1, and average length of spikes is 14.1 cm. By 2016, the annual average per square the average number of shoot-meter crown is 38.9, and average total number of shoots per plant end is1980.2, and the total length of the autumn shoots averaged is 19.4 cm, and growth times of shoot of elderly tree is mostly twice as three times of young tree The average number of leaves is 10.8, and average length of spikes is 12.2 cm.4, The investigated 'Nuomici' plants are mostly about 15 years-old trees, and the average crown diameter of the tree is about 5.8 m, and the average crown surface area is 58.9 m2.By2016, the average crown diameter of the tree is about 6.0 m, and the average crown surface area are 59.8 m2 In 2015, the annual average per square the average number of shoot-meter crown is 44.7,and average total number of shoots per plant end is 2640.3, and the total length of the autumn shoots averaged is 18.3 cm, and growth times of shoot is mostly twice,and the average number of leaves is 8.2, and average length of spikes is 11.9 cm. By 2016,the annual average per square the average number of shoot-meter crown is 33.1, and average total number of shoots per plant end is 1929.7, and the total length of the autumn shoots averaged is 19.9 cm, and growth times of shoot is mostly twice, The average number of leaves is 10.0, and average length of spikes is 11.1 cm.5, According to the analysis of nutrition compounds, the contents of phosphorus and potassium of these three litchi cultivars were lower than the standard value(N: 16.48~20.65g/kg, P:1.82~2.26 g/kg).