论文部分内容阅读
利用塑料薄膜覆盖地面栽培蔬菜作物,是一种新的保护栽培方式。为了观察不同蔬菜作物地面覆盖后的生育表现,探讨地面覆盖后土壤理化状况的变化,研究地面覆盖后作物的田间管理技术,于1978年春,利用废旧薄膜,采取挖洞覆盖与条幅覆盖两种方式,以莴笋、番茄、甜椒、黄瓜为试材,进行了薄膜地面覆盖试验。一、地面覆盖后蔬菜的生育表现(一)促进了根系的生长:于番茄初花期和拔秧前分别观察了根系的生育状况,明显看出,地面覆盖促根效果明显,在根系取样不全的情况下,初花期根量较对照增长35.1%,成龄植株,其一次根数较对照增长2倍多。在其他蔬菜上
The use of plastic film covering the ground to cultivate vegetable crops is a new way of conservation and cultivation. In order to observe the reproductive performance of different vegetable crops after ground cover, explore the change of soil physical and chemical conditions after the ground cover, and study the field management techniques of ground cover crops. In the spring of 1978, using waste film and taking burrowing and banner covering Taking lettuce, tomato, bell pepper and cucumber as test materials, the film ground cover test was carried out. First, the reproductive performance of vegetables after ground cover (A) to promote the growth of the root system: To observe the fertility of the root system at the beginning of flowering and seedling transplanting, it is obvious that the ground cover to promote rooting effect is obvious in the root sampling In the first flowering stage, the amount of roots increased 35.1% compared with the control. In mature plants, the number of roots at the first flowering increased more than twice as much as that of the control. On other vegetables