摘要
为探明玉米秸秆还田量对春大豆干物质生产及产量的影响规律。田间设置4个玉米秸秆还田量处理:0 kg/hm^2(对照)、6000 kg/hm^2(B处理)、12000 kg/hm^2(C处理)、18000 kg/hm^2(D处理),研究玉米秸秆还田量对‘新大豆27号’叶面积指数(LAI)、群体光合势(LAD)、干物质积累与分配、产量的影响。结果表明,随玉米秸秆还田量的增加,秸秆还田处理(B处理、C处理和D处理)大豆LAI峰值、总光合势、干物质积累量分别较对照增加16.5%~26.5%、12.2%~34.5%、9.7%~26.8%;秸秆营养物质向籽粒的转移量较对照增加68.2%~169.9%、转移率提高2.9%~7.2%;单株粒数较对照增加6.7%~13.1%,产量增加11.4%~19.6%。在本试验条件下,玉米秸秆还田均能有效增加大豆产量,还田量为6000~12000 kg/hm^2,大豆产量较高(5172.5~5361.4 kg/hm^2)。玉米秸秆还田量高于12000 kg/hm^2,大豆增产幅度下降。
To ascertain the effects of corn straw returning amount on the dry matter production and yield of spring soybean.4 treatments of corn stalks in the field:0 kg/hm^2(control),6000 kg/hm^2(Treatment B),12000 kg/hm^2(Treatment C),and 18000 kg/hm^2(Treatment D)to study the effects of corn straw return to the field on the leaf area index(LAI),population photosynthesis potential(LAD),dry matter accumulation and distribution,and the yield of‘New Soybean 27’.The results showed that with the increase of the amount of corn straw returned to the field,the peak LAI,total photosynthetic potential,and dry matter accumulation of soybeans treated with the straw returning to the field methods(Treatments B,C and D)increased by 16.5%-26.5%,12.2%-34.5%and 9.7%-26.8%;The amount of transferring straw nutrients to the grains increased by 68.2%-169.9%,and the transferring rate increased by 2.9%-7.2%compared with those of the control;The number of grains per plant increased by 6.7%-13.1%and the output increased by 11.4%-19.6%than those of the control.Under the conditions of this experiment,returning corn stalk to the field could effectively increase soybean yield.When the returning amount was 6000-12000 kg/hm^2,the soybean yield was higher(5172.5-5361.4 kg/hm^2).When the amount of corn stalks returned to the field was more than 12000 kg/hm^2,the increase in soybean yield decreased.
作者
汪晓东
李磊
王铜
张建勋
章建新
WANG Xiao-dong;LI Lei;WANG Tong;ZHANG Jian-xun;ZHANG Jian-xin(College of Agronomy,Xinjiang Agricultural University,Urumqi 830052,China)
出处
《新疆农业大学学报》
CAS
2019年第5期307-312,共6页
Journal of Xinjiang Agricultural University
基金
国家自然科学基金项目(31660367)。
关键词
春大豆
玉米秸秆
还田量
干物质积累
产量
spring soybean
corn straw
returning amount
dry matter accumulation
yield
作者简介
通讯作者:章建新,E-mail:zjxin401@126.com。
