Dapog秧苗生產力之初步觀察

Abstract

嘉義農業試驗分所為明嘹Dapog秧田在本省推廣之可能性，於民國56年第二期作設置該秧田育苗，觀察其在秧田及本田之表現並與本省推廣之標準改良秧田（對照）比較。本試驗初步結果顯示Dapog秧苗之苗高，每苗葉數均較改良秧田者為小，但是其每苗根長，根數却大於改良秧田。在本田發育初期，Dapog區之株高，每株分蘗均小於對照區，惟在成熟期，兩處理之株高，每株穗數相若而Dapog秧田區之每株穗數稍高於對照區。Dapog區之生育日數長於對照區，相差極為顯著。就每公頃乾淨谷之產量而言，Dapog區高達4,712公斤，較對照區增產3.4%。由於Dapog秧田可節省勞力，又可縮短秧田日數，其秧苗生產力亦不亞於本省之改良秧田育成之秧苗，故若經試驗改良後，在本省第二期作似有採用之價值。 Dapog”seedbed extensively practiced in Southern Luzon and the Bicol regions of the Philippines was tried in the second crop of 1967 at the Chiayi Agricultural Experi-ment Station, and the performance of its seedlings was compared with those of the standard“Improved”nursery or semi-irrigated nursery commonly practiced in Taiwan n both the nursery and the paddy field. The preliminary observation showed that“Dapog”seedlings were smaller and younger than those of the“Improved”nursery at the time of transplanting. The length and the number of root of each“Dapog”seedling were, however, larger than those of the check. The plant height and the number of tillers per hill at 40 days after transplanting were. smaller in the plots of“Dapog”seedlings, but they were larger at maturing stage Heading date of“Dapog”treatment was significantly later than that of the check. Grain yield of“Dapog”seedings reached 4,712 kg per ha which was 157 kg or 3.4% hgiher than that of the“Improved”nursery. Since the“Dapog”seedbed can save much labors and reduce stem or root injury in the pulling of seedlings, it appears highly likely that this method can be accepted in the second crop in some part of Taiwan.