| 王学勤,刘兆普,赵耕毛,郑青松,陈健妙,云燕,符永升,刘玲.沙质海滩海水连续灌溉对芦荟生长发育的影响[J].干旱地区农业研究,2006,(6):35~38 |
| 沙质海滩海水连续灌溉对芦荟生长发育的影响 |
| Studies on Aloe vera under continuous seawater irrigation in the sandy sea-beach |
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| DOI：10.7606/j.issn.1000-7601.2006.06.08 |
| 中文关键词: 沙质海滩 海水连续灌溉 库拉索芦荟 生长量 土壤含盐量 |
| 英文关键词:sea-beach continuous seawater irrigation aloe vera growth yield salt content in soil |
| 基金项目:国家863项目“微咸水、再生水高效安全利用技术”(2004AA2Z4061)； “滩涂海水灌溉农业示范”项目(2003AA627040) |
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| 中文摘要: |
| 海南海涂沙滩(非耕地)库拉索芦荟从苗期至叶片采摘期连续3 a的海水小区灌溉试验结果表明:①不同生长发育期海水灌溉对芦荟地上部产量影响不同,2000年11月至2003年3月(苗期),10%、25%海水两处理地上部产量(干物质,下同)同淡水灌溉处理(CK,下同)没有显著差异,从50%海水处理开始,随着海水比例的增加,库拉索芦荟地上部产量显著下降;随着灌溉时间的延长,至芦荟叶片采收期(2004年5月),10%、25%、50%三个处理与CK比地上部产量没有显著差异,而从75%海水处理起,其地上部产量开始显著下降。②海水灌溉芦荟幼苗始期(2000年11月初至2001年1月底),与CK比较,所有比例的海水处理芦荟根的生长量(干重,下同)均显著下降,随着灌溉时间的延长(至2003年3月),从75%海水灌溉处理起,其根生长量开始显著下降,而且25%海水处理芦荟根的生长量显著高于CK,至2004年5月的叶片采收期,75%、100%比例海水处理芦荟根的生长量显著低于CK,而其它处理与CK没有差异。③土壤各层次含盐量在2000年11月至2003年3月的灌溉处理期间内,无规律性的变化,而至2004年5月, 无论是耕层土, 还是底层土, 随着海水比例的增加, 盐分含量呈显著增加的趋势。但即使全海水灌溉, 土壤含盐量仍在0.2%以下。④土壤各灌溉处理速效磷变化差异不显著, 总体上速效磷水平较低;海水灌溉显著提高了耕层土的速效钾含量, 而CK处理中, 耕层土速效钾含量在20 mg/kg以下。 |
| 英文摘要: |
| Continuous seawater irrigation experiments for 3 years from seedling stage to leaf-picking stage were conducted in the sea-beach (noncultivated land) of Hainan Province.The results showed: ① During different growth and development period, effects of seawater irrigation on shoot yield of aloe were different.There was no difference of shoot yield among 10%, 25% seawater and fresh water irrigation, with seawater proportion increasing from 50% seawater, shoot yield decreased significantly from November 2000 to March 2003 (from seedling period to bolting period) .However, with irrigation time elongation, to leaf-picking period (May 2004) , aloe shoot yields of 10%, 25%, 50% seawater treatment are no significant different from that of control, while shoot yield decreased under 75% seawater treatment.② At the begin of aloe seedling under seawater irrigation (November 2000～January 2001) , root dry mass increased under all seawater treatments decreased significantly compared with control, with irrigation time elongation to March 2003, up to 75% seawater irrigation, root growth yield began to decrease, while root growth under 25% seawater treatment was much more than that under control.To leaf-picking period of May 2004, root growth under 75% and 100% seawater treatment much lower than that under control, while the other seawater treatments were not different from control.③ Salt content of different soil depth from November 2001 to March 2003 showed no order change.Up to May 2004, salt content in tillage soil and deep soil showed significant increasing trend, salt content in soil was below 0.2% even under 100% seawater irrigation.④ As a whole, available-P content was low, and available-P was no significantly different in every irrigation treatments.Available-K content was below 20 mg/kg in tillage soil of control and increased markedly under seawater irrigation. |
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