夏甘薯盖草增产显著

来源 :农业科技通讯 | 被引量 : 0次 | 上传用户:jinhao03
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
我县自1988年以来,在丘陵梯田进行夏甘薯盖草试验。3年平均亩产鲜薯1995.5公斤,比不盖草的对照增产237.4公斤,增产13.80%。1990年在10个丘陵乡镇进行示范推广5000亩,经30个点测产验收,平均产量比对照增产10.7%。获县科委科技进步三等奖。实践证明:盖草方法简单易行,取材方便,是夏甘薯增产的一项有效措施。 My county since 1988, in the hilly terraces summer sweet potato cover grass test. The average annual output of 3 years of fresh potato 1995.5 kg, 237.4 kg more than the non-grass control, an increase of 13.80%. In 1990, 10 hectares of townships and towns were modeled for demonstration and promotion of 5000 mu. After 30 points of test, the average yield of rice increased 10.7% over the control. The county science and technology progress prize three. Practice has proved that: Cover grass method is simple and easy, drawing convenient, summer sweet potato yield an effective measure.
其他文献
本研究分别从土壤和杜鹃花根部分离了丛枝菌根真菌(AMF)和杜鹃类菌根真菌(EMF)。通过接种草莓和越橘两种小浆果植物宿主,分别筛选到了一株极易人工培养的丛枝菌根真菌和5株杜
Results conceing existence, uniqueness and local regularity of Inhomogeneous Schrodinger flow from TR^d into S2, are presented by using the difference method,wh
请下载后查看,本文暂不支持在线获取查看简介。 Please download to view, this article does not support online access to view profile.
We study logarithmic gradient estimate to smooth admissible solutions of the Hessian-type equations on Sn. The equations contain a Monge-Ampere equation arising
On the assumption that the total variation of the initial data is sufficiently small,we can use the stability results of Dafermos to get the L2 estimate of the
以华杂棉H318(Gossypium hirsutum L.)为材料,在盆栽和大田种植条件下,采用移栽方式,研究了钾肥用量(kg/ha) (A,0; B,112.5; C,225; D,337.5; E, 450),对棉花生长发育、农艺性状、生理生化、生物质积累、产量以及纤维品质的影响。结果表明,钾肥用量225kg/ha是最适宜的,其棉花生育进程加快,主要农艺性状优良,产量和纤维品质性状较好,生理