关键词: 诱变, 诱变, 抗裂果, 等离子体, 嫁接, 剂量

Abstract: Abstract: In order to study the difference of soil fertility and leaf nutrition elements distribution characteristic between different ‘little white’ apricot orchards with various soil texture. Take full fruit period orchards respectively with loam and sandy soil as research objects. Analyze for organic matters and nutrient elements (N, P, K, Ca, B, Mg, Zn, Fe, Cu, Mn) in 0-20 cm and 20-60 cm depths soil layer. The result showed that:(1) The leaf total nitrogen content is in moderate level, calcium/magnesium ratio is higher in both two kind soil texture orchards. The leaf nitrogen content in loam soil orchard is higher than sandy. Total nitrogen element content in september leaf is lower than in may, Variation law of phosphorus element content with time was opposite to nitrogen variation.(2) Soil organic matter, total nitrogen, available Phosphorus, available potassium, manganese, iron and cuprum elements content have obvious regulation in both soil texture orchards, but the regulation are not same; other elements contents (Ca, B, Mg, Zn) have certain difference, but no obvious rules.(3) The result of correlation analysis between soil and leaf elements content are different in various soil texture, have less regularity.(4) The ‘little white’ apricot loam soil orchard fertilizer management should pay attention on increasing organic fertilizer application depth. The management of sand orchard should be according the apricot pattern of requirement of fertilizer to apply additional and supplementary fertilization.