不同水肥处理对骏枣光合特性及产量的影响

Effects of Different Water and Fertilizer Treatments on Photosynthetic Characteristics and Yield of Jun Jujube

为探究南疆沙区红枣适宜的水肥灌溉制度及黄腐酸钾肥在红枣种植中的应用效果,以当地18年树龄骏枣为供试材料,在滴灌条件下开展不同水肥处理对骏枣光合特性及产量的影响试验。结果表明,不同水肥处理间光合特性及生长发育指标存在差异。以全年灌水量6300 m^(3)/hm^(2)、全年施肥量1200 kg/hm^(2)(高水高肥)处理净光合速率与产量最高,以全年灌水量5400 m^(3)/hm^(2)、全年施肥量1200 kg/hm^(2)(中水高肥)处理叶绿素含量最高,以全年灌水量6300 m^(3)/hm^(2)、全年施肥量900 kg/hm^(2)(高水中肥)处理树体生长最旺盛。综合各项光合特性、生长发育及产量指标分析,以全年灌水量6300 m^(3)/hm^(2)、全年施肥量1200 kg/hm^(2)处理对骏枣生产最为有益。

In order to explore the suitable water and fertilizer irrigation system and the application effect of potassium humate fertilizer on Jun jujube cultivation in the sand area of southern Xinjiang,18-year-old trees of local Jun jujube were used as test materials.Experiments were conducted on the effects of different water and fertilizer treatments on the photosynthetic characteristics and yield of Jun jujube under drip irrigation conditions.The results indicated that there were differences in photosynthetic characteristics and growth and development indicators among different water and fertilizer treatments.The net photosynthetic rate and yield were the highest in the treatment of annual irrigation volume of 6300 m^(3)/hm^(2) and annual fertilization volume of 1200 kg/hm^(2)(high level of water and fertilizer).The chlorophyll content was the highest in the treatment of annual irrigation volume of 5400 m^(3)/hm^(2) and annual fertilization volume of 1200 kg/hm^(2)(medium level of water and high level of fertilizer).The tree growth was most vigorous in the treatment of annual irrigation volume of 6300 m^(3)/hm^(2) and annual fertilization volume of 900 kg/hm^(2)(high level of water and medium level of fertilizer).Based on the analysis of various indicators of photosynthetic characteristics,growth and development,and yield,the treatment of annual irrigation volume of 6300 m^(3)/hm^(2) and annual fertilization volume of 1200 kg/hm^(2) was most beneficial to the production of Jun jujube.