图们江流域一年两作模式研究

Study on Planting Pattern of Double Cropping System in Tumen River Basin

为改变种植结构,有效提高农民经济收入,本文对图们江流域一年两作种植模式进行研究,一季作选取马铃薯3个品种,鲜食玉米4个品种,二季作选取萝卜4个品种、白菜4个品种。初步筛选出适宜图们江流域两季作的品种,鲜食玉米3个品种,马铃薯3个品种,白菜3个品种,萝卜4个品种。

Traditional potato planting methods are easy to cause virus accumulation and variety degradation.At present,it has become a trend to use virus-free stem tip to prevent potato degradation and ensure high and stable yield.In this paper,the effects of different disinfection methods,different concentrations of hormone ratio of induction medium,different stem tip size,different culture conditions on shoot tip seedling and virus-free on the potato variety Yanshu 9 were studied.The results showed that under the conditions of tap water washing for 1-2 min+75% ethanol for 1 min+0.1% mercuric chloride for 5 min + sterile water washing for 2 times can achieve the ideal disinfection effect.Under the condition of MS+1.0 mg·L-1 IAA+1.0 mg·L-1 GA3+30 g·L-1 sucrose+8 g·L-1 agar,0.3-0.4 mm meristem,2 000 lx light intensity,16 h·d-1 light duration and 26 ℃ culture temperature,the best seedling forming effect was obtained.