关键词: 绿竹, 施肥, 笋营养成分, 笋期叶养分

Abstract:

The experiment was carried out in Youxi County, Fujian Province to study the effects of different fertilization, including organic manure, compound fertilizer, inorganic manure, and nonfertilizer, on nutrient components of bamboo shoot and nutrient content of N, P, K in leaves of bamboo during shoot growth stage for Dendrocalamopsis oldhami. The results indicated that the contents of N, P, K, and of coarse protein, coarse fibre, amino acids hydrolyzed from protein in bamboo shoot were increased obviously in 3 fertilizer treatments. The highest contents of N and protein was found in the inorganic manure treatment, and the highest contents of P, total amino acids, and total essential amino acids in bamboo shoot were in the treatment of compound fertilizer,and the highest contents of K, coarse fibre, semi essential amino acids were in the treatment of organic manure. However, the contents of reductive sugar, total soluble sugar, sucrose, and starch in the treatment of nonfertilizer were higher than other fertilization treatment. There was a certain difference in N,P,K content of bamboo leaves among 3 fertilization treatments during different emergence period of bamboo shoot. The contents of N, P, K in bamboo leaves in the fertilization treatments were higher than those in the nonfertilizer treatment at the initial stage of shoot emergence, the highest contents were bound in the treatment of inorganic manure. At the prosperity stage, the highest contents of N and P were in the treatment of organic manure. The highest content of K was in the treatment of inorganic manure. The highest content of N in bamboo leaves was bound in the organic manure treatment at the last stage of shoot emergence, and the highest contents of P and K were bound in the nonfertilier and inorganic manure treatment respectively at the same stage of shoot emergence.

Key words: Dendrocalamopsis oldhami, Fertilization, Nutrient component of shoots, Nutrient of leaves during shoots emergence stage