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在山西浮山人工模拟建立不同土壤库容系统,对不同库容的生物学效应、蓄水供水效应及水分生产效率进行了研究,明确了黄土高原旱地小麦的最佳土壤库容深度为1.5-2.0m,为黄土高原旱地小麦建立适宜的土壤库容提供了理论依据。1.5-2.0m深的土壤库容改善了小麦全生育期土壤水分状况,特别在小麦需水关键期(拔节期)能最大限度地供给小麦水分,从而有效地增加小麦成穗数及穗粒数。该系统每亩可增产小麦142.5-174.5kg,增产率高达63.3%-78.7%。
Different soil storage systems were set up in fossils of Fushan Mountain in Shanxi Province to study the biological effect, water supply and water supply effect and water production efficiency of different storage capacities. The optimal soil storage depth of dryland wheat in the Loess Plateau was 1.5-2. 0m, providing a theoretical basis for establishing proper soil storage capacity for dryland wheat in the Loess Plateau. Soil depth of 1.5-2.0m improved the soil moisture status during the whole growth period of wheat, especially in wheat critical period (jointing stage), which could supply wheat moisture to the maximum extent, thus effectively increasing the number of ears and ears of wheat Number of grains. The system can increase yield of wheat per acre 142.5-174.5kg, yield as high as 63.3% -78.7%.