摘要
为探讨在黄河滩区植棉减量施用控释氮肥的方法,以转基因抗虫杂交棉中棉所75为试验材料,设计了棉花基肥和花铃肥均减量(180 kg·hm-2)施用控释氮肥,基肥施用普通尿素、花铃肥施用控释氮肥,基肥、花铃肥均施用普通尿素和控释氮肥的掺混肥,基肥和花铃肥均常量(225 kg·hm-2)施用控释肥氮肥(CK)的试验,研究了减量施用控释氮肥对棉花生长发育及产量的影响.结果表明,与CK相比,基肥和追肥均使用普通尿素和控释氮肥的掺混肥能促进棉花生育,增加叶面积和营养器官、生殖器官的干质量,提高单株结铃数和铃重,子棉和皮棉产量分别增加5.33%和4.33%;但将控释氮肥的使用量由225 kg·hm-2降至180 kg·hm-2时,子棉和皮棉产量分别减少7.34%和7.28%,子棉减产达显著水平.
To investigate the effects of reducing amount of controlled release nitrogen （N） fertilizer on growth and yield of cotton cultivated in Yellow River bottomland, we conducted a field experiment u- sing transgenic Bt CrylA ＋ CpTI hybrid cotton cultivar, CCRI （China Cotton Research Institute）75 with four N fertilizers treatments, including reducing amount （ 180 kg· hm^-2 ） of controlled release N fertilizer （T1） , urea applied as base fertilizer and endoplasm coated urea as topdressing fertilizer in flowering stage （T2） , the same amount of urea and endoplasm coated urea mixed as base fertilizer and topdressing fertilizer （T3） ,traditional amount （225 kg · hm^-2） of controlled release N fertilizer （T4, CK）. The results indicated that N applied as T3 could improve the growth and development of cotton, and increase the LAI, dry matter accumulation of vegetative organs and reproductive organs, the num- ber and weight of boll, and analysis of variance showed and the seed cotton yield and lint yield in-creased by 5.33% and 4.33% than CK, respectively. But N applied as T1 could decrease seed cotton yield and lint yield by 7.34% and 7.28% than CK, respectively, and analysis of variance showed that the seed cotton yield was significantly different.
出处
《河南农业大学学报》
CAS
CSCD
北大核心
2014年第3期275-279,共5页
Journal of Henan Agricultural University
基金
河南省现代农业产业技术体系棉花创新团队耕作栽培岗位项目(S2014-07-2)
中国科学院院企联合攻关重大项目(Y19HX14701)
关键词
黄河滩地
棉花
控释氮肥减量
生长发育
产量
Yellow River bottomland
cotton
reducing amount of controlled release nitrogen fertiliz-er
growth and development
yield
