论文部分内容阅读
试验目的继续探讨利用日光余热保温育苗,促进早发之简易措施。试验方法试验设四个处理,同于1980年5月6日用营养缽播种育苗。营养缽成分:砂质壤土3份,塘泥1份,加过磷酸钙、氯化钾分别折合纯磷、钾0.25％。缽体制成:直径6厘米,高7.5厘米的圆柱体。苗床系平地挖成长7.0米、宽0.82米、深0.15米的凹型床体。供试品种:岱字15号。播种前用80℃的温开水浸种2分钟,迫使合点帽缝张开。然后置于35℃的温水中浸20分钟,使之吸足水分。并剔除未成熟棉子,每缽点播成熟棉子2粒。苗床育苗及管理方法如下:1.晚上盖双层草帘于塑料薄膜上;2.晚上盖单层草帘于塑料薄膜上;3.晚上单盖一层塑料薄膜于苗床上;4.露地,不盖草帘及薄膜作为对照。
The purpose of the experiment Continue to explore the use of sunlight heat insulation and nursery to promote early onset of simple measures. Test methods Test set up four treatments, the same with the May 6, 1980 sowing seedlings with a nutritional bowl. Nutritional bowls Ingredients: sandy loam 3, pond 1, add superphosphate, potassium chloride, respectively, equivalent to pure phosphorus and potassium 0.25%. Bowl made of: diameter 6 cm, 7.5 cm high cylinder. Planted flat bed to grow 7.0 meters wide, 0.82 meters wide, 0.15 meters deep concave bed. Test varieties: Dai word on the 15th. Sowing with warm water at 80 ℃ for 2 minutes before sowing, forcing the joint hat seam to open. Then placed in 35 ℃ warm water soak for 20 minutes, make it absorb enough water. And remove immature cotton, cotton swab each on-demand maturity 2. Seedling nursery and management methods are as follows: 1 night covered with double straw curtain on the plastic film; 2 night covered with a single layer of straw curtain on the plastic film; 3 night covered with a single layer of plastic film on the seedbed; Do not cover straw curtain and film as a control.