"High level" water canal rooting
Various measures can prevent
In Tanfang Town, Changle County, Shandong Province, some of the canals in the vegetable sheds were too high from the planting ground, and some even reached 40 cm in height. The disadvantages of such a high level of waterway are too many, not only to bring difficulties to the irrigation, but also to the fact that the water flow is too fast and “falls downâ€. Higher canals often rush out of the pit below the outlet, leaving the vegetable roots close to the drains exposed, and the plants tend to grow poorly, as weak trees.
For the phenomenon that the canal is set too high, it exists in the greenhouses of many vegetable farmers. The problems caused by the high flow of water can cause root problems. There are many measures for prevention in the management. For example, put a cloth bag at the outlet to reduce the drop of water flow, or fix the waste woven bag at the outlet to stop the flow of water. In addition, it is also possible to place tiles, old plugs, etc. at the water outlet to prevent erosion.
Height and width ratio of the sheds are affected
The height of the greenhouse refers to the height of the vegetable greenhouse. In general, the height of the second row of columns in the shed (from the number of north walls) shall prevail. The width of the shed refers to the span of the vegetable greenhouse. Generally, the width of the greenhouse is measured from the side of the canal to the shed in the north wall of the shed. cutting edge. As the saying goes, "There will be a span of height."
The survey found that many vegetable farmers increased their planting area for vegetable sheds and built it wider and wider. Some sheds had a width of 14.5 meters. Due to the constraint of the capacity of cement columns and walls, the height of vegetable sheds was only 4.5 meters. Left and right, the shed height is not proportional to the width of the shed, which may lead to the arch of the shed being too small, thus affecting the lighting properties of the shed roof. At the same time, due to the span of the shed body being too large, the bearing capacity of the pillar increases. In addition, due to the wide ceiling, it is difficult to release air, especially at the front of the winter greenhouse, it is difficult to release moisture, the disease is easily infested, and it becomes the “source area†of vegetables in the greenhouse. Diseases such as gray mold and downy mildew are prone to occur. .
The imbalance between height and width of the sheds exists in many areas, especially in some areas affected by the soil texture conditions. The height of the wall of the sheds cannot reach the height of the shed, so the ratio between the sheds and spans is often out of balance, resulting in insufficient shed angles. Affect the shed environment.
Then, how can the sheds in the management of the shed be adjusted to account for its shortcomings? In the case that the type of vegetables cultivated does not change well, it is advisable to install a fan for promoting air circulation in the shed used in the nursery base, or to install a manual or electric ventilation device at the tuyere; if the type of vegetables cultivated does not change Economic Benefits: It is suggested that greenhouses with unbalanced height and width of greenhouses should be grown with some vegetables and varieties that are resistant to low light, such as spicy (sweet) peppers. By selecting the types and varieties of vegetables that meet the conditions of certain greenhouses, the disadvantages of poor lighting and slow heating of the greenhouses can be avoided.
Increase the height of the crane wire to increase the lighting between the rows
A lot of loofah growers' sheds have a low height of their hanging vine wire, which is about 1.7 meters high. After the loofah sits on a melon, it is affected by its gravity, and the hanging vine wire between the two columns is about 10 centimeters lower.
Obviously, in the production, if the height of the hanging wire is too low, it will directly affect the normal height of the loofah. Once the height of the loofah is limited, it cannot be guaranteed that there will be enough leaves for photosynthesis. The photosynthesis of the plants was poor, and photosynthetic products accumulated less. Not only the growth of the vines and melons was inhibited, but also the performance of the plants was weak and the melons were small. The roots of the plants were also transported due to lack of nutrients in the shoots. The roots were weak, and the roots were weak. Happening. In addition to the low height of the hanging wire, which is unfavorable to the growth of the plant, the vegetable grower often needs to drop and bind the vine. This is not only labor-intensive, but also breaks the stem in operation, causing unnecessary losses.
Since the height of the wire is too low, the most direct method of production is to increase the wire height. Suggestion: After pulling out the garden and clearing the garden, use a long steel drill to drill on the three walls, pull the steel wire, bury the anchor, and adjust the height of the hanging vine wire to about 2.2 meters. Make sure that the number of effective photosynthetic leaves of the loofah is about 16 pieces. .
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