Effect of organic amendments on maize cultivation under agricultural drought conditions in Central Java, Indonesia
Effect of organic amendments on maize cultivation under agricultural drought conditions in Central Java, Indonesia
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DOI：
10.3178/hrl.14.150
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发表时间：
2020
影响因子：
1.1
通讯作者：
M. Zaki;K. Noda;Kengo Ito;Komariah;D. Ariyanto;M. Senge
中科院分区：
文献类型：
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作者：
M. Zaki;K. Noda;Kengo Ito;Komariah;D. Ariyanto;M. Senge
本研究考察了三种有机改良剂-堆肥（CP），甘蔗渣（SB）和稻壳灰（RA）-对印度尼西亚中爪哇农业干旱条件下农田土壤水分和玉米生长的影响。在播种前3天将湿有机改良剂以20 t ha-1的比率施用并混合到根区。在试验期间，任何处理中均不包括化学肥料。CP和RA保持土壤水分高于土壤吸力pF1.0之间的初始种植和收获。相比之下，SB处理加剧了农业干旱的影响，与对照（CO）或无有机材料相比。CP（690 kg ha-1）和RA（538 kg ha-1）的玉米产量高于CO（456 kg ha-1）和SB（382 kg ha-1），但所有产量均低于中爪哇的区域平均水平（698 kg ha-1）。玉米产量与土壤最低含水量呈极显著正相关（R2 = 0.80）.总体而言，CP和RA大大减少了农业干旱对雨养农田造成的损害。最低土壤水分值是农业干旱条件下玉米产量差异的主要解释因子。
: This study examined the effect of three organic amend‐ ments − compost (CP), sugarcane bagasse (SB), and rice husk ash (RA) − on soil moisture and maize growth in rainfed farmland under agricultural drought conditions in Central Java, Indonesia. The wet organic amendments were applied at a rate of 20 t ha –1 and mixed into the root zone 3 days before seeding. Chemical fertilizers were not included in any treatment during the experiment. CP and RA kept the soil moisture above the soil suction of pF 1.0 between initial planting and harvesting. By contrast, SB treatment exacerbated the impact of the agricultural drought com‐ pared with the control (CO) or no organic material. The maize yields of CP (690 kg ha –1 ) and RA (538 kg ha –1 ) were higher than those of CO (456 kg ha –1 ) and SB (382 kg ha –1 ); all yields were lower than the regional average in Central Java (698 kg ha –1 ). Maize yield was correlated with the lowest soil moisture value (R 2 = 0.80). Overall, CP and RA substantially reduced the damage to rain-fed farmland caused by agricultural drought. The lowest soil moisture value was a major explanatory factor with respect to the yield gap of maize under agricultural drought conditions.