สืบค้นงานวิจัย
Effect of Water and Rice Straw Management on Yield and Water Productivity of Irrigated Lowland Rice in Ayutthaya
Rajendra P. Shrestha - ไม่ระบุหน่วยงาน
ชื่อเรื่อง (EN): Effect of Water and Rice Straw Management on Yield and Water Productivity of Irrigated Lowland Rice in Ayutthaya
ผู้แต่ง / หัวหน้าโครงการ (EN): Rajendra P. Shrestha
ชุดเอกสาร (EN): การประชุมวิชาการกรมการข้าว ประจำปี 2562 บูรณาการเทคโนโลยี และนวัตกรรมเพื่อการพัฒนาข้าว
บทคัดย่อ (EN): In two consecutive rice-growing seasons (wet and dry season) of 2016 – 2017, field experiments were conducted at Ayutthaya Rice Research Center. These experiments were aimed to evaluate yield and water productivity of irrigated lowland rice under different water and rice straw managements. The treatments were comprised of two water managements which were continuous flooding (CF) and alternate wetting and drying (AWD). Moreover, there were three rice straw managements which were rice straw incorporation (RS-I), rice straw burning (RS-B) and without rice straw incorporation and burning (WRS-I+B) applied in this study. The results showed that AWD increased grain yield by 15% in the wet season and by 7% in the dry season compared with CF. AWD also reduced total water input by 19% in the wet season and by 39% in the dry season resulting in an improvement in total water productivity by 46% in the wet season and by 77% in the dry season when compared to CF. Rice straw application by either soil incorporation or open-field burning had no effect on grain yield, water-saving potential and water productivity of the tested variety regardless of the growing seasons. Although its positive role in supplying plant nutrients and maintaining soil fertility, rice straw incorporation in the field or burning should be discouraged due to negative environmental impacts. In recommendation, the best AWD practice is application of 15 cm threshold water level below the soil surface for irrigation or with soil water potential of ≥ -20 kPa or AWD15 which is suitable for irrigated lowland rice cultivation in term of reducing total water input without jeopardizing yield.
บทคัดย่อ: ไม่พบข้อมูลจากหน่วยงานต้นทาง
ภาษา (EN): en
จำนวนหน้า (EN): 1
เผยแพร่โดย (EN): กรมการข้าว
คำสำคัญ (EN): Water productivity
หมวดหมู่ (EN): พืชอาหาร
หมวดหมู่ AGRIS (EN): A50 การวิจัยทางการเกษตร (Agricultural research)
เจ้าของลิขสิทธิ์ (EN): กรมการข้าว
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Effect of Water and Rice Straw Management on Yield and Water Productivity of Irrigated Lowland Rice in Ayutthaya
Rajendra P. Shrestha
กรมการข้าว
ไม่ระบุวันที่เผยแพร่
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