Use insect proof net for agricultural planting, we must not think that as long as the cover is good, it can be once and for all. We must pay attention to adjusting the usage according to the change of seasons. So, when we use it, how should we adjust the use method? Let's introduce this problem to you.
First of all, because of the changeable climate in early spring, the low temperature at night and the invasion of cold in late spring, we should pay attention to the night heat preservation coverage when using the insect net, which can effectively reduce the occurrence of cold injury in early spring. In the middle and last ten days of March, the temperature and ground temperature of tomato, pepper and other plastic film small arched shed planted at night can be increased by adding insect control net, which is beneficial to slow seedling growth and promote growth.
Second, from the end of March to the beginning of April, the plastic film can also be used to cooperate with the insect control net to cover the potatoes, cowpeas, and green beans that are planted early or seeded early at night (the floating cover is to cover the crops directly with the insect control net, or the bamboo pole and rope can be used to build a simple horizontal frame about 50 cm high and then cover the insect control net), which can promote growth and reduce frost damage.
Third, the high temperature in summer, and frequent wind and rain, is very unfavorable to the cultivation of vegetable seedlings. Using insect net instead of straw, straw, straw and so on in the past can improve the survival rate and seedling quality. The specific methods are as follows: before sowing and emergence, the insect control net shall be directly covered on the seedbed, and after emergence, it shall be put on the shelf and covered in time. The height of the shed edge shall not be less than 1 m, and it shall be uncovered in sunny and rainy days: when the temperature is higher than 30 ℃, it shall be uncovered at 10:00 a.m., 4:00 p.m., and it shall be uncovered in all days when the temperature is higher than 35%.
Fourth, in the hot summer, the fast-growing leafy vegetables can be cultivated by shading and cooling with insect prevention net. The insect prevention net can be covered on the original greenhouse, small and medium-sized arch shed and other protection facilities or on the simple scaffold. It can normally grow radish, coriander, celery, spinach, lettuce, chrysanthemum, etc. which are difficult to grow on the open ground in summer.
The above is for you to introduce the adjustment of the use method according to the seasonal characteristics when using the insect prevention net. The majority of vegetable farmers can refer to the above suggestions when using the insect prevention net.