Watering vegetables in winter
Do not cast concrete overcast time according to different weather conditions to select, strictly abide by sunny watering, cloudy or not pouring water, rain and snow days avoid the principle of watering, especially in cold and cloudy snow to avoid watering, In order to avoid causing a drop in the temperature of the ground, the roots of the vegetables will become dead, or the air humidity in the shed will increase, causing the disease to occur and spread.
Small pouring, large winter temperatures are low, and the amount of water needed by the vegetables is also small, so the number of waterings should be less and the amount of watering should be small, and flood irrigation can not be carried out. Under normal circumstances, small water is interlaced, and the amount of watering is only half of summer. For example, winter cucumbers can be watered alternately, watered by small banks twice, watered by large banks, and irrigated alternately.
Pouring water without cooling water Before pouring, water must be preheated in the shed. After the water temperature is close to the ground temperature, it is poured and the water temperature is not lower than 12°C. It is not possible to directly use cold water in rivers, reservoirs, and ponds. After watering is complete, turn off the ventilation openings so that the temperature in the greenhouse can reach 30°C or more and stabilize for 1 to 3 hours.
Do not pour the dark winter greenhouse vegetables to adhere to the film under the dark irrigation, or under the membrane micro-irrigation, which can effectively prevent the ground water evaporation, reduce the indoor air humidity, to prevent the occurrence of diseases. The use of micro-irrigation has a positive effect on the balance and coordination of water, fertilizer, gas, and heat required for vegetable growth. In particular, the use of micro-irrigation in the middle and early stages is beneficial to root control, control of air humidity in the shed, and reduction of pests and diseases. It can also effectively control the amount of water, reduce the leakage of water in deep layers and the loss of fertilizers, improve soil structure and performance, promote the growth of crops and improve the quality of vegetables.
Freeze Dried Seafood,Flavour Freeze Dried Cod,Freeze Dried Squid Slice,Freeze Dried Cod Cat Food
Ningbo Nutrition Food Technology Co.,ltd. , https://www.collagenworkshop.com