摘要
以4个短季棉品种(中棉所50、鲁棉研35、邯686、豫早棉9110)为材料,研究了早播(4月25日播种,密度设置为52 500株/hm2)与正常播期(5月15日播种,密度设置为75 000株/hm2)条件下的子棉产量、皮棉产量及养分利用效率,结果表明:早播对短季棉品种的生育期无显著影响,早播条件下,短季棉品种的子棉产量、皮棉产量、衣分均高于正常播期,生物量、每100 kg皮棉产量氮、磷、钾吸收量低于正常播期,氮、磷、钾养分利用效率高于正常播期。本试验条件下,早播提高了短季棉品种氮、磷、钾养分利用效率,从而提高了子棉、皮棉产量。
The field experiment was conducted to study seed cotton, lint yield and nutrient utilization efficiency of 4 short-season cotton varieties on the condition of sowing earlier than ordinary （ April 25 ） with planting density of 52 500 plants per ha and sowing ordinarily （May 15） with planting density of 75 000 plants per ha. The 4 test short-season cotton varieties were CRI 50, SCRC 35, Han 686, Yuzaomian 9110. The results indicated that earlier sowing had no influence on growth stage of short-season cotton varieties and seed cotton yield, lint yield, lint percentage of short-season cotton varieties on the condition of sowing earlier were higher than those of sowing ordinarily respectively, while biological yield, nitrogen, phosphorus, potassi- um uptake quantities per 100 kilograms seed cotton yield and per 100 kilograms lint yield on the condition of sowing earlier were fewer than those of sowing ordinarily respectively, and nitrogen, phosphorus, potassium utilization efficiencies on the condition of sowing earlier were higher than those of sowing ordinarily respectively. In the field experiment, nitrogen, phosphorus, potassium utilization efficiencies were improved by sowing earlier than ordinary, thus seed cotton yield and lint yield were en- hanced.
出处
《中国土壤与肥料》
CAS
CSCD
北大核心
2014年第1期79-83,共5页
Soil and Fertilizer Sciences in China
基金
中央级公益性科研院所基本科研业务专项(SJB1216)
国家棉花产业体系建设专项资金(CARS-18-17)
转基因生物新品种培育重大专项(2012IM08013007)
关键词
播期
短季棉品种
养分利用效率
sowing date
short-season cotton varieties
nutrient utilization efficiency
