【摘要】 在平武王朗自然保护区采用塑料棚育苗、大田育苗和山上直播育苗三种方式进行对比试验,结果表明:棚内比棚外年平均增温0.4℃,年平均湿度提高3.6％;根据竹苗生长需要,控制其需水量和棚内光照等措施,每年可延长竹苗生长期一个月以上。在两年零2个月的生长时间里,棚内竹苗高比田间竹苗高13.17cm;地径比大田竹苗大0.03 cm;平均每丛株数多5株;每株叶片多2.2片。塑料棚育竹苗与大田育竹苗相比,还可节约用种,且可以提前一年出圃造林。从经济效益上衡量,除第1年塑料棚育竹苗比大田育竹苗投资多外,2～3年后塑料棚育竹苗收入和总收入就开始多于大田育苗。4年多的试验研究结果表明,以竹苗生长的平均高度比较,塑料棚竹苗的高度是大田竹苗高度的2.3倍,是直播苗的14.6倍,地径和分蘖株数也相应增加。更多还原

【Abstract】 Three experimental designs of seedlings cultivation in plastic greenhouse, field and direct seeding in Wanglang Nature Reserve, Pingwu county, resulted that the annual relative humidity in the greenhouse increased by 3.6%, and the temperature by 0.4℃ higher than that in field. With the moisture and light control, the growing period of bamboo seedlings in the greenhouse could be prolonged for over one month. Twenty-six months later, the average height of seedlings was 26 cm, which was 13.17 cm higher than those in field, average rhizome diameter of the former was 0.03 cm larger than that of the latter, culms of each clump and leaves of each culm of the former were 5 and 2.2 more than those of the latter. Compared with the field cultivation, greenhouse seedlings could save seed and the seedlings from the greenhouse could be planted one year earlier than those from field. From economical viewpoint, the investment of the first year of the greenhouse was higher than that of field cultivation, but the second and the third year, it was reverse. The result of over 4 years studies indicated that the average height of seedling from greenhouse was 2.3 and 14.6 times higher than that from field and direct seeding.更多还原