| “外敷内治”给蔬菜大棚“降火” |
| 添加时间：2017/5/24 15:48:47 浏览次数： |
| 立夏以后，很多种植越夏蔬菜的菜农反映，由于棚内温度过高，中午时最高气温可达40℃左右，导致蔬菜生长不良，出现高温障碍，如番茄叶片边缘出现灼烧状，落花落果现象严重，辣椒则出现大量日灼果及脐腐果……另外，夜温过高，蔬菜易发生徒长，营养生长与生殖生长不均衡，影响花芽分化质量，导致畸形果多，严重降低种植效益。因此，一到炎夏，菜农朋友们就绞尽脑汁地想办法来降低棚内温度。在此，记者根据调查走访，将生产中切实可行的降温方法总结一下，方便菜农朋友参考，简单总结为四个字“外敷内治”。 After the summer begins, a lot of planting the summer vegetable farmers, because of the relative temperature is too high, up to 40 ℃, the highest temperature at noon lead to poor vegetables growth, temperature disorder, such as tomato leaf margins a burning, fallen petal fruit drop phenomenon is serious, chili, appeared a lot of burning fruit and umbilical rotten fruit... In addition, the night temperature is too high, vegetables are prone to moderate growth, vegetative growth and reproductive growth is not balanced, affect the quality of flower bud differentiation, leading to deformity fruit, more severely reduce the planting benefit. As a result, in the summer, the friends of the vegetable farmers racked their brains to try to lower the temperature in the shed. In this, the reporter according to the survey, will produce the feasible cooling method to summarize, convenient farmers friend reference, simply summed up in two words "apply". 所谓“外敷”，主要指在大棚棚膜上覆盖各种遮阳物，减少光照射入，降低棚内光照强度，从而达到遮阳降温的目的。 So-called "external", mainly refers to the films in the greenhouse covered all kinds of sun shade, reduce light that shoots, reduce relative light intensity, thus achieve the goal of sunshade and cooling. 第一：铺设遮阳网。 First: laying a sunshade. 目前菜农使用的遮阳网大致分为两类，一是黑色遮阳网，二是白色或银色遮阳网。黑色遮阳网的遮阳降温效果要比白色遮阳网好，但不足之处是需要每天拉放，不可全天覆盖遮阳网，较费时费力；而白色遮阳网效果虽不如黑色遮阳网，但较省事，可全天一直覆盖。两者各有所长，因此，这两类遮阳网在菜农当中用得比较多。 Currently, there are two kinds of sunshade nets used by vegetable farmers, one is black and the other is white or silver. The shade of black shading is better than white, but the downside is that you need to pull it every day and not cover it all day long. While white shading is not as effective as black shading, it can be covered throughout the day. The two kinds of sunshade are used more by vegetable farmers. 通常情况下，菜农朋友习惯将遮阳网直接覆盖在棚膜上，这样操作简单，但是有的菜农发现，将遮阳网撑起来，留出与棚膜相聚20厘米左右的空隙，这样形成一个通风带后，遮阳降温效果更佳，您不妨一试。 Normally, vegetable farmers friend habits will sun-shade net cover on the films directly, so the operation is simple, but some farmers found that the sun-shade net, and set aside the gap and films together 20 centimeters, forming a ventilation to take to do so, sunshade and cooling effect is better, you might as well try. |
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