張鎧鵬 朱曉惠
摘要:在隴東旱塬區對引進的25個玉米品種進行了比較試驗,結果表明,25個玉米品種的平均折合產量為12 618.5 kg/hm2,高于平均產量的品種有13個。其中以瑞普908折合產量最高,為16 827.0 kg/hm2;其次是京農科968、MC278和先玉335,分別為15 291.0、15 181.5、15 168.0 kg/hm2。折合產量超過13 500 kg/hm2的品種有6個,分別是新引M753、陜單609、京農科728、陜單636、吉單66、西蒙6號。九圣禾2468、迪卡519和大豐30的產量均略高于平均值。通過綜合性狀及產量性狀分析,以上13個玉米品種均適宜在隴東旱塬區推廣種植。
關鍵詞:隴東旱塬區;耐密品種;玉米;篩選試驗
中圖分類號:S513? ? ? ? ?文獻標志碼:A? ? ? ? ?文章編號:1001-1463(2019)02-0053-06
Abstract:With potatoes cultivar Xindaping as experimental materials, the effects of 99% chlorpropham, 96% carvone and methyl 97% methyl 1-naphthalene acetate on potato refreashing during the storage were studied. The observation results of the sprout inhibition, weight loss rate, respiratory intensity and quality show that, the order of the sprout inhibitor's effect was 99% chlorpropham >96% carvone > 97% methyl 1- naphthalene acetate. Compared with the control group, the groups treated by sprout inhibitor can delay the potato dormancy for 70 days, and make sure the potato refreshing for 5 months. The recommended dose of 96% carvone and 97% methyl 1- naphthalene acetate was 0.6 mL /kg potato and 100 mg/kg potato, respectively, which can replace the chemical chlorpropham and achieve the purpose of green and safe preservation.
Key words:Potato sprout inhibitor;Chlorpropham;Carvone;Methyl 1-naphthaleneacetate;storage effect
甘肅隴東地區屬黃土高原溝壑區,是我國西北典型的雨養農業區,玉米作為該區的第二大作物,其產量對當年糧食作物的總產量有很大貢獻 ,尤其近些年隨著全膜雙壟溝播技術在的示范推廣,破解了春夏干旱限制農業安全生產的瓶頸,玉米成了種植業效益最好的作物,玉米生產潛力得到極大提升,但由于長期種植的玉米品種以稀植大穗、生育期長為主,密度一般在4.50萬~5.25萬株/hm2,平均密度4.9萬株/hm2,距密植6.0萬~7.5萬株/hm2尚有差距[1 - 5 ]。為了篩選出適宜隴東地區全膜雙壟溝播的密植玉米品種,我們于2018年對引進的25個玉米新品種進行試驗,現將研究結果報道如下。
1? ?材料與方法
1.1? ?供試材料
參試玉米品種有25個,分別為隴單9號、京農科728、瑞普908、迪卡519、新玉47、京農科968、鄭單958、西蒙6號、五谷704、吉單66、九圣禾2468、陜單650、大豐30、陜單636、陜單609、新引M753、先玉335、銀玉439、科河699、聯創825、強盛388、九玉M03、MC278、新玉108、潞玉1611,均由甘肅省農業科學院旱地農業研究所提供。……