Enhanced plant growth, development and fiber yield of Bt transgenic cotton by an integration of plastic mulching and seedling transplanting
Enhanced plant growth, development and fiber yield of Bt transgenic cotton by an integration of plastic mulching and seedling transplanting
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DOI：
10.1016/j.indcrop.2007.03.008
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发表时间：
2007-10-01
影响因子：
5.9
通讯作者：
Zhang, Dongmei
中科院分区：
文献类型：
--
作者：
Dong, Hezhong;Li, Weijiang;Zhang, Dongmei
地膜覆盖和秧苗移栽是我国棉花生产广泛采用的集约化种植制度。先前的研究表明，与传统种植相比，单独使用覆盖或移植可显着提高产量。本研究于2003年至2005年在中国山东北部黄河流域进行了两项试验，以检验移栽和地膜覆盖相结合是否比单独使用移栽更有利地提高棉花产量。在2003年和2004年的第一次试验中，杂交Bt棉花品种SCRC 15在温室中种植，但在4月初，将培育的幼苗移植到地膜或地膜上。五月初未覆盖的田地。评估了棉花的植物生长和发育、产量和产量构成以及早熟度。在2004年和2005年的第二次试验中，对3个杂交和3个非杂交Bt棉花品种进行了综合系统或单独移栽管理，并检查了每个品种的产量。第一次实验的结果显示了植物的生长发育、产量和产量组成。与2003年和2004年单独采用移栽相比，地膜和移栽结合显着提高了棉花的早熟性。与不覆盖相比，2003年皮棉产量和单位面积棉铃数分别增加了17.4％和14.6％，2004年分别增加了17.1％和15.3％。这种增强主要归因于移栽后初期土壤温度的显着升高。育苗土块大小对2003年和2004年最终皮棉产量分别有显着和不显着的提高。第二次试验中，覆膜与不覆膜（单独移栽）相比，杂交棉2003年皮棉平均产量提高了17.8%，2004年提高了16.9%，非杂交棉2003年皮棉产量提高了13.3%，2004年提高了13.5%。研究表明，在鲁北等高温地区，地膜与育苗移栽相结合比单独移栽更能有效提高棉花产量。 (C) 2007 Elsevier B.V. 保留所有权利。
Plastic mulching and seedling transplanting are widely adopted intensive planting systems for cotton production in China. Previous studies have demonstrated considerable yield increases by individual use of mulching or transplanting compared with conventional planting. In the present study, two experiments were conducted to test if an integration of transplanting and plastic mulching is more beneficial than individual use of transplanting for enhancing cotton production, in northern Shandong, Yellow River Valley of China from 2003 to 2005. In the first experiment in 2003 and 2004, a hybrid Bt cotton cultivar SCRC 15 was planted in a greenhouse-like but in early April, and the raised seedlings were transplanted to mulched or non-mulched field plots in early May. Plant growth and development, yield and yield components, and earliness of cotton were evaluated. In the second experiment in 2004 and 2005, three hybrid and three non-hybrid Bt cotton cultivars were managed with the integrated system or with transplanting alone, and yields of each cultivar were examined. Results from the first experiment showed that plant growth and development, yield and yield components. and earliness of cotton were significantly enhanced by an integration of mulching and transplanting compared with individual use of transplanting in either 2003 or 2004. Lint yields and the number of bolls per unit ground area were increased by 17.4% and 14.6% in 2003, and 17.1% and 15.3% in 2004 with plastic mulching in comparison with non-mulching, respectively. Such enhancement was mainly attributed to significantly increased soil temperature during early season after transplanting. The size of soil blocks for seedling nursing had significant and non-significant enhancement on final lint yield in 2003 and 2004, respectively. In the second experiment, average lint yields of hybrid cotton were increased by 17.8% in 2003 and 16.9% in 2004, and those of non-hybrid cotton were 13.3% in 2003 and 13.5% in 2004 with mulching in comparison with non-mulching (individual use of transplanting). It was concluded that an integration of plastic mulching and seedling transplanting can be more effective than individual use of transplanting to enhance cotton production in northern Shandong and other heat-limited areas. (C) 2007 Elsevier B.V. All rights reserved.