论文部分内容阅读
夏薯种苗不足是我省红薯生产中的一个突出问题.由于缺苗而造成晚栽减产,品种混杂,病害蔓延.所以育足壮苗是红薯大面积增产的关键.为了提高采苗圃的采苗量,1982年我所进行了覆盖地膜试验.据试验结果看出:地膜覆盖夏薯采苗圃具有显著的经济效益.一、试验方法(一)供试品种为郑红四号及徐薯18.栽种面积各为O.05亩.设覆盖地膜与对照(不覆膜)两处理,采取对比法,其中郑红
Lack of sweet potato seedlings is a prominent issue in the production of sweet potato in our province due to lack of seedlings caused by late planting and reduced production, hybrid varieties, spread of disease.So fertility and seedling is the key to large-area production of sweet potato.In order to improve mining mining According to the test results, we can see that: the mulching with mulching film mulch has significant economic benefits.First, the test methods (a) the test varieties Zhenghong IV and Xushu 18 . Planting area of each O.05 acres. Set to cover the plastic film and the control (not covered) two treatment, to take the contrast method, which Zheng Hong