不同遮阴处理对小花山奈生长的影响

    Effects of Different Shading Treatments on the Growth of Kaempferia parviflora

    • 摘要: 为探究小花山奈的光照需求特性,为其在华南地区的栽培提供理论依据。在小花山奈块茎繁殖期间进行遮阴栽培试验,测量不同遮阴处理下小花山奈地下部分、地上部分的鲜重和干重,并得到月生长量、含水量和产量等数据。结果表明:在小花山奈生长初期(7~8月),不同遮阴处理对小花山奈地上、地下部分的生长无显著影响;在小花山奈生长中期(9~10月),30%的遮阴处理有利于促进小花山奈地上、地下部分的生长;在小花山奈生长后期(11月~次年1月),30%的遮阴处理有利于促进小花山奈地上部分的生长,全光照有利于促进小花山奈地下部分的生长。小花山奈的地上部分迅速增长期集中在8~11月,地下部分迅速增长期集中在10~12月;适度的遮阴(30%遮阴度)处理有利于提高小花山奈的产量,但遮阴度太高(50%遮阴度)反而会大大降低小花山奈的产量。因此,在夏季给予30%遮阴处理、秋冬季给予全光照是小花山奈在华南地区种植的最佳光照模式。

       

      Abstract: In order to explore the light demand characteristics of Kaempferia parviflora and provide the theoretical basis for its cultivation in South China, the shading cultivation experiment of K. parviflora was carried out during its tuber propagation period. The fresh and dry weights of the underground and aboveground parts of K. parvifloria which were cultivated under different shading treatments were measured. Followingly, the data of monthly growth, water content and yield were also obtained. The results showed that: In the early growth period ( from July to August ), different shading treatments had no significant effect on the growth of aboveground and underground parts of Kaempferia parviflora. In the late growth period ( from November to January of the next year ), 30 % shading treatment was beneficial to the growth of the aboveground part of Kaempferia parviflora, and full illumination was beneficial to the growth of the underground part of Kaempferia parviflora. The rapid growth period of the aboveground part of Kaempferia parviflora was concentrated from August to November, and the rapid growth period of the underground part was concentrated from October to December. The moderate shading treatment (30 % shading degree) was beneficial to improve the yield of Kaempferia parviflora. However, too high shading degree (50 % shading degree) would greatly reduce the yield of Kaempferia parviflora. Therefore, 30% shading degree in the summer and full illumination in the autumn and winter would be the best illumination pattern for the plantation of K. parviflora in the southern China.

       

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