论文部分内容阅读
2013-2014年设置复播大豆田间试验,调查滴灌条件下麦后不同耕作方式复播大豆的生理指标及主要农艺性状,以探究适合北疆滴灌条件下麦后复播大豆的高产耕作方式.结果表明:麦后实施不同土壤耕作方式复播大豆在测定期间的群体叶面积指数(LAI)、叶绿素含量(SPAD)、叶片净光合速率(P_n)、蒸腾速率(T_r)和气孔导度(g_s)均表现出翻耕覆膜(TP)>翻耕(T)>旋耕(RT)>免耕(NT),而胞间CO_2浓度(C_i)呈现相反的结果.其中,TP处理两年LAI、SPAD、P_n、T_r、g_s的均值分别比NT处理高55.0%、9.1%、41.8%、37.5%和56.4%,而C_i下降22.1%,且均达显著差异水平,说明TP处理增强了大豆的光合效率,提高叶片同化CO_2的能力,这是其较NT处理大豆增产的主要光合生理机制.TP处理显著提高了植株干物质积累量,其单株荚数、单株粒数、百粒重分别较NT处理提高50.3%、48.1%、11.8%,增产达20.8%,差异显著.因此,本试验条件下,北疆麦后复播大豆宜采用翻耕后地膜覆盖结合膜下滴灌技术的耕作方式.
In 2013-2014, a field experiment was conducted to study the physiological characteristics and major agronomic traits of double cropping soybean after drip irrigation under different drip irrigation conditions to explore the high-yielding cultivation methods suitable for soybean replanting soybean under drip irrigation in northern Xinjiang.Results The results showed that leaf LAI, SPAD, P_n, transpiration rate (T_r) and stomatal conductance (g_s) of soybean planted in different soil tillage practices after wheat (TP)> tillage (T)> tillage (RT)> no-tillage (NT) and intercellular CO 2 concentration (C_i) showed the opposite results.Among them, TP treated two years of LAI, The average values of SPAD, P_n, T_r and g_s were 55.0%, 9.1%, 41.8%, 37.5% and 56.4%, respectively, while the average values of C_i and C_i decreased 22.1% and NT_2 respectively, indicating that TP treatment enhanced the photosynthesis of soybean Which is the main photosynthetic mechanism of soybean yield increase compared with NT treatment.TP treatment significantly increased the accumulation of plant dry matter, the number of pods per plant, the number of per plant and the weight of 100 grains were respectively NT treatment increased by 50.3%, 48.1%, 11.8%, yield increased by 20.8%, the difference was significant.Therefore, the test strip Next, after the northern wheat multicasting soybean farming methods should be used in conjunction with mulching Drip Irrigation techniques after plowing.