高效益菜瓜、棉、间作套种两法

来源 :河南农业 | 被引量 : 0次 | 上传用户:cyddvd
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
近年来,我们采用冬菜、西瓜、棉花间作套种,年亩产值一般达1500—2000元。目前正在我县推广,方法如下: 一、1.6米一带:9月中下旬每带种四行 In recent years, we use winter vegetables, watermelons, cotton intercropping, annual output value of 1500-2000 yuan. Currently being promoted in our county, the method is as follows: First, 1.6 meters around: mid-late September each with four lines
其他文献
Changes in the environmental conditions experienced by naturally occurring populations are frequently accompanied by changes in adaptive traits allowing the org
抗坏血酸又称维生素C (L-ascorbic acid,AsA),是植物和大多数动物体内合成的一类含量丰富的己糖内酯化合物,是人类必须的一种维生素。由于人体缺乏合成AsA的能力,必须从蔬菜
本试验以丰水梨(Pyrus pyrifolia Nakai.cv.Housui)、黄金梨(Pyrus pyrifolia Nakai.cv. Whangkeumbae)和幸水梨(Pyrus pyrifolia Nakai.cv.Kousui)为试材,通过叶营养分析、D
Biological control of agricultural pests relies on knowledge of agroecosystem functionality,particularly when affected by the use of mass-produced biological ag
相干激光通信系统中,光学系统的偏振像差会改变信号光的偏振态,降低信号光与本振光的混频效率。为了定量分析和研究光学系统的偏振特性,提出了三维偏振光线追迹算法。针对大
期刊
@@
Intra-and interspecific variation in plant and insect traits can alter the strength and direction of insect-plant interactions,with outcomes modified by soil bi