Soybean cultivar Bei 92-28 was tested in this experiment in 2000 to study the coupling effect of water and ferilizer on soybean yield.The results showed that the effect of irrigation varied among the levels of fertili...Soybean cultivar Bei 92-28 was tested in this experiment in 2000 to study the coupling effect of water and ferilizer on soybean yield.The results showed that the effect of irrigation varied among the levels of fertilizer application,and vice versa;pods per plant,seeds per pod.and 100-seed weight had positive correlations with soybean yield,but the degrees of correlations of different treatments were various;LAI and dry matter accumulation could be significantly increased when watered and applied fertilizer with different levels,but high fertilizer application treatment didn't obtain the highest yield;watering could increase the absolute absorption amount of N,P,K in seeds,but the accumulation rates were various.展开更多
为明晰水肥耦合对炭基质栽培番茄产量品质的提升效应,将生物炭混掺到由酒糟、秸秆等农业废弃物拌制成的基质模块中,设置2个灌溉量(I_(1):100%ET_(c),I_(2):80%ET_(c),ET_(c)为作物蒸发蒸腾量),2个施肥量(N-P_(2)O_(5)-K_(2)O)(F_(1):240...为明晰水肥耦合对炭基质栽培番茄产量品质的提升效应,将生物炭混掺到由酒糟、秸秆等农业废弃物拌制成的基质模块中,设置2个灌溉量(I_(1):100%ET_(c),I_(2):80%ET_(c),ET_(c)为作物蒸发蒸腾量),2个施肥量(N-P_(2)O_(5)-K_(2)O)(F_(1):240-180-200 kg/hm^(2),F2:180-135-150 kg/hm^(2))及基质中4个生物炭添加量(B0:0,B1:1%,B3:3%,B5:5%),共16组处理,研究水肥耦合对炭基质栽培番茄叶面积指数(leaf area index,LAI)、叶绿素相对含量(soil and plant analyzer development,SPAD)、植株养分(全氮、全钾、有机碳)吸收量、化学计量特征(氮钾比、碳氮比)、产量及品质(可溶性固形物含量、维生素C含量、硝酸盐含量、可溶性糖含量、可滴定酸含量、糖酸比)的影响,揭示炭基质栽培番茄产量及品质的关键驱动因子,构建以番茄产量、品质及其关键驱动因子为目标的熵权-TOPSIS多目标综合评价模型,提出水肥与炭基质耦合的最优方案。结果表明:炭基质对番茄LAI、SPAD值、养分吸收量、产量及品质影响显著(P<0.05);在相同灌溉和施肥条件下,炭基质增加了番茄整株钾吸收量、整株碳同化量、产量及维生素C含量,降低了硝酸盐含量;基于结构方程模型,番茄整株碳同化量是产量的关键驱动因子,其增加有助于提高番茄产量,氮钾比是品质的关键驱动因子,其降低有助于改善番茄品质;采用熵权-TOPSIS多目标综合评价模型,筛选出I_(1)F_(2)B_(3)处理是水肥与炭基质耦合的最优方案。研究可为农业废弃物高效利用及高品质果蔬的水肥炭有效管理提供理论依据。展开更多
文摘Soybean cultivar Bei 92-28 was tested in this experiment in 2000 to study the coupling effect of water and ferilizer on soybean yield.The results showed that the effect of irrigation varied among the levels of fertilizer application,and vice versa;pods per plant,seeds per pod.and 100-seed weight had positive correlations with soybean yield,but the degrees of correlations of different treatments were various;LAI and dry matter accumulation could be significantly increased when watered and applied fertilizer with different levels,but high fertilizer application treatment didn't obtain the highest yield;watering could increase the absolute absorption amount of N,P,K in seeds,but the accumulation rates were various.
文摘为明晰水肥耦合对炭基质栽培番茄产量品质的提升效应,将生物炭混掺到由酒糟、秸秆等农业废弃物拌制成的基质模块中,设置2个灌溉量(I_(1):100%ET_(c),I_(2):80%ET_(c),ET_(c)为作物蒸发蒸腾量),2个施肥量(N-P_(2)O_(5)-K_(2)O)(F_(1):240-180-200 kg/hm^(2),F2:180-135-150 kg/hm^(2))及基质中4个生物炭添加量(B0:0,B1:1%,B3:3%,B5:5%),共16组处理,研究水肥耦合对炭基质栽培番茄叶面积指数(leaf area index,LAI)、叶绿素相对含量(soil and plant analyzer development,SPAD)、植株养分(全氮、全钾、有机碳)吸收量、化学计量特征(氮钾比、碳氮比)、产量及品质(可溶性固形物含量、维生素C含量、硝酸盐含量、可溶性糖含量、可滴定酸含量、糖酸比)的影响,揭示炭基质栽培番茄产量及品质的关键驱动因子,构建以番茄产量、品质及其关键驱动因子为目标的熵权-TOPSIS多目标综合评价模型,提出水肥与炭基质耦合的最优方案。结果表明:炭基质对番茄LAI、SPAD值、养分吸收量、产量及品质影响显著(P<0.05);在相同灌溉和施肥条件下,炭基质增加了番茄整株钾吸收量、整株碳同化量、产量及维生素C含量,降低了硝酸盐含量;基于结构方程模型,番茄整株碳同化量是产量的关键驱动因子,其增加有助于提高番茄产量,氮钾比是品质的关键驱动因子,其降低有助于改善番茄品质;采用熵权-TOPSIS多目标综合评价模型,筛选出I_(1)F_(2)B_(3)处理是水肥与炭基质耦合的最优方案。研究可为农业废弃物高效利用及高品质果蔬的水肥炭有效管理提供理论依据。
