CAJ | 학술논문

为了给东北地区白桦(Betula platyphylla Suk.)容器育苗提供适宜的基质配方,在东北林业大学白桦强化育种基地温室内,以河沙、草炭和耕作土为基质,对其18种配比的育苗结果进行了筛选.结果表明:3种基质的不同配比能够显著影响白桦苗木的SPAD值、苗高、地径和全株生物量.当河沙体积分数在0～20%的范围内,白桦苗木的SPAD值、苗高、地径和全株生物量处于最高值,随着基质中河沙比例的进一步增加,各指标呈抛物线下降;随着草炭比例的增加,各指标则呈现上升趋势;耕作土比例的变化,各指标基本不变.综合基质不同配比下白桦幼苗的SPAD值、地径、苗高和全株生物量结果,18种育苗基质可分为3组:第1组为S6、S9 、S11、S16处理,第2组为S3、S7、S10、和S15处理,第3组为S1、S2、S4、S5、S8、S12、S13、S14、S17和S18处理.遵循育苗基质的适用性和经济性原则,白桦容器育苗的适宜基质配比为S6处理,即V(草炭): V(沙子): V(耕作土)=2: 1: 7.
위료급동북지구백화(Betula platyphylla Suk.)용기육묘제공괄의적기질배방,재동북임업대학백화강화육충기지온실내,이하사、초탄화경작토위기질,대기18충배비적육묘결과진행료사선.결과표명:3충기질적불동배비능구현저영향백화묘목적SPAD치、묘고、지경화전주생물량.당하사체적분수재0～20%적범위내,백화묘목적SPAD치、묘고、지경화전주생물량처우최고치,수착기질중하사비례적진일보증가,각지표정포물선하강;수착초탄비례적증가,각지표칙정현상승추세;경작토비례적변화,각지표기본불변.종합기질불동배비하백화유묘적SPAD치、지경、묘고화전주생물량결과,18충육묘기질가분위3조:제1조위S6、S9 、S11、S16처리,제2조위S3、S7、S10、화S15처리,제3조위S1、S2、S4、S5、S8、S12、S13、S14、S17화S18처리.준순육묘기질적괄용성화경제성원칙,백화용기육묘적괄의기질배비위S6처리,즉V(초탄): V(사자): V(경작토)=2: 1: 7.
An experiment was conducted to screen the suitable substrate for container seedling cultivation in the green house of the Intensive Breeding Base of Betula platyphylla in Northeast Forestry University, Harbin City, Heilongjiang Province.The cultivation effects for different proportionings of peat, sand, and cultivated soil were analysed. Results showed that dif-ferent proportionings of peat, sand, and cultivated soil could significantly affect the relative content of chlorophyll, seedling height, basal diameter, and whole-plant biomass. As sand content was in the range of 0～20% , the chlorophyll content, seedling height, basal diameter, and whole-plant biomass reached their maximum values, while the above-mentioned indi-ces parabolically decreased with increasing percentage of sand. All the indices showed an increasing trend with increasing percentage of peat and a constant trend with increasing percentage of cultivated soil. Different proportionings of peat, sand, and cultivated soil could be classified into three groups according to the integrated analysis of relative chlorophyll content, basal diameter, seedling height, and whole-plant biomass. The optimum substrate proportion for cultivating con-tainer seedlings of B. platyphylla was screened out on the basis of economical and applicable principles, namely, the pro-portion of peat, sand, and cultivated soil was 2:1:7.