为探索西南半干旱地区酒竹栽培的施肥方法,分析了竹炭基生物质肥和有机肥栽培条件下酒竹伤流液采集量年变化和营养成分的差异,为其功能型饮料的制备和竹炭基生物质肥的应用提供基础数据。结果表明:全年竹炭肥(ZT)条件下,从5月雨季开始到11月干季初期可采集伤流液,7—10月为丰期,伤流液采集量(CSap)的最高纪录是9月(2.66 L),1月仍有微量伤流液,说明ZT效果明显;进入干季,>1015 cm处土壤含水量(WS15)及土壤温度(TS15)数据表明竹炭肥具有保温保湿的作用。ZT和有机肥(CK)2种处理CSap与环境参数间相关性显著。全年度的环境解释因子可采用空气温度(TA)、空气湿度(MA)、风速(Sw)、05cm处土壤含水量(WS5)和WS15进行解释。ZT提高了钾、钙、铁、锰、铜5种元素的含量,也提高了伤流液的采集量、蛋白质含量、还原糖含量和p H值。酒竹伤流液具有18种氨基酸,其中谷氨酸(GLU)、丙氨酸(ALA)和脯氨酸(PRO)的含量较高。ZT较CK处理各种氨基酸含量都有所提高。因此,ZT处理能延长伤流液采集时间,提高采集量,增加多种矿质元素、常规营养成分和氨基酸含量,施肥效果明显,具有较广的应用前景。
To explore for optimal fertilization methods for wine bamboo groves in the semi-arid region of Southwest China, bamboo bleeding sap was collected from wounds of wine bamboo poles in groves applied with bamboo biochar-based bio-manure ( ZT) or organic manure for analysis of annual collection rate ( CSap ) and nutrition composition of the bleeding sap as basic data for preparing a functional beverage out of the sap and for designing ZT application methods in the wine bam-boo groves. Results show that in the groves applied with ZT for the whole year, bleeding sap collection could last from May (beginning of the rainy season) till November (beginning of the dry season), with the prime season covering the four months between July and October and the sap yielding peak( 2. 66 L) occurring in September, and traces of sap flow could still be observed in January, which indicates that the effect of ZT on sap yielding was significant. Besides, the data on soil water content and soil temperature in the soil layer 10-15 cm in depth in the dry season also indicate that the application of ZT may help conserve soil moisture and temperature. In the groves applied with ZT and organic manure (CK), CSapwas found in significant correlations with environmental parameters, such as air temperature ( TA ) , air humidity ( MA ) , wind speed (SW), soil water content at 0-5 cm depth(WS5)and at >10-15 cm depth (WS15). Treatment ZT was higher than CK in K, Ca, Fe, Mn and Cu content and in collection rate, content of protein, reducing sugar and amino acids and pH of the bleeding sap. Analysis of the bleeding sap from wine bamboo shows it contains 18 amino acids, among which GLU, ALA, and PRO are comparatively high in content. Therefore, the sap is rich in nutrient and hence a good raw material for development of a natural beverage. Application of ZT may prolong the sap collection period, increase sap yield and the contents of multi mineral elements, conventional nutrients and amino acids in the sap. So ZT, i. e. bamboo bio-char-based biomanure,