油茶新造林追肥试验

Topdressing test of new plantation of Oil-tea Camellia

为保证新造油茶林营养的及时补充,促进树体生长,对油茶新造林进行了追肥试验,结果表明:施肥能显著促进新造林植株生长,提高叶片叶绿素和可溶性糖的含量;施肥处理的抽新梢率和平均新梢数分别为83.3%和3.8,分别比对照高31.6%和47.0%;施肥处理叶片的叶绿素和可溶性糖含量显著高于对照,分别达5.43 mg/g和39.98 mg/g;不同品种油茶苗造林后施肥效果不同,其中‘湘林67’的施肥生长效果最好;施肥有利于促进容器苗新梢的生长,增加新梢叶片叶绿素及内含物的含量,但对裸根苗造林植株的生长有一定的抑制作用。

In order to ensuring nutrition for new plantation of Oil-tea Camellia in time, topdressing test of new plantation of Oil-tea Camellia was conducted. The result showed that topdressing markedly promoted growth and increased the con- tent of chlorophyll and soluble saeeharide of leaf. The shoot growth rate and average shoot number of topdressing was 83.3% and 3. 8 respectively, more 31.6% and 47.0% than contrast. The content of chlorophyll and soluble saccharide of leaf of topdressing markedly exceeded that of contrast, which reached 5.43 mg/g and 39. 98 mg/g respectively. Differ- ent breeds of afforestation seedling had different topdressing effect, and the growth effect of XL67 was the best. Topdress- ing was beneficial to promote growth of container seedling and increase the content of chlorophyll and inclusion of leaf, but it restrained the growth of bare-rooted seedling.