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在苗圃和温室中分别研究了菌根菌接种对23个短枝木麻黄种源和10个山地木麻黄家系生长的影响,并筛选出优良菌根菌—木麻黄基因型组合体。试验表明,苗圃中接种菌根菌对短枝木麻黄种源苗高和地径的改善程度不同,效果与种源有密切关系,筛选出了一些优良“菌根菌—木麻黄种源”组合体,23个种源中18357种源的接种效果最好,其次为18143,18122和18121种源;在温室中,参试家系所有性状在接种处理间、家系间、家系×菌种互作间均有极显著差异。接种菌根菌明显改善了木麻黄苗对磷(P)的吸收量,幼苗枝叶的P吸收量都为相应对照值的1 3～2 7倍,且菌根菌 家系组合体对土壤中P的吸收能力不同,有利于P吸收的组合有C9216 家系7和家系8、E4100 家系6、7和8。用苗高、地径、地上生物量和P吸收量等因素对30个参试菌根菌 家系组合进行综合评价,选出13个优良组合:C9216 家系8、E4100 家系6、C9216 家系3、C9216 家系7、E4100 家系8、E4100 家系1、E4100 家系5、E9216 家系7、C9216 家系5、E4100 家系4、E4100 家系2、C9216 家系6和C9216 家系10,这些组合均好于未接种处理的家系3的综合评价值,其中家系5、6、7、8对2种菌根菌组合效果都比较理想,而家系3、1、2、10只与2种菌根菌中的一种构成良好的组合。试验证明外生菌根菌接种在木麻
The effects of mycorrhizal inoculation on the growth of 23 families of Casuarina equisetifolia and 10 families of Casuarina equisetifolia were studied in nurseries and greenhouses, respectively. The combinations of excellent mycorrhizal fungi and Casuarina equiseti were screened out. Experiments show that the nursery inoculation mycorrhizal spruceHuanyuan provenance height and diameter of the ground to improve the degree of difference, the effect is closely related with provenances, screened out some of the excellent "Mycorrhizal fungi - Casuarina provenance In the greenhouse, all the traits of the tested families were between inoculation treatment, pedigree, pedigree × species interaction. In the greenhouse, 18357 sources of 23 provenances had the best inoculation effect, followed by 18143, 18122 and 18121 provenances. Between the two have very significant differences. Inoculation with mycorrhizal fungi significantly improved the phosphorus (P) uptake of Casuarina equisetifolia seedlings, and the P uptake of shoots and leaves of seedlings was 13 ~ 27 times higher than that of the corresponding control, Absorption capacity is different, the combination of P absorption benefit C9216 family 7 and family 8, E4100 family 6,7 and 8. Thirteen excellent combinations were selected based on the factors of seedling height, diameter, aboveground biomass and P uptake. Thirteen combinations were selected: C9216 family 8, E4100 family 6, C9216 family 3, C9216 Pedigree 7, E4100 pedigree 8, E4100 pedigree 1, E4100 pedigree 5, E9216 pedigree 7, C9216 pedigree 5, E4100 pedigree 4, E4100 pedigree 2, C9216 pedigree 6, and C9216 pedigree 10, all of which were better than those of unseeded pedigrees 3 , Of which 5, 6, 7, 8 pairs of two kinds of mycorrhizal fungi combination effect is ideal, and the family of 3,1,2,10 and two kinds of mycorrhizal bacteria constitute a good combination . Test proved that ectomycorrhizal inoculation in the wood