There is much to be said about the relocation of watermelon seedlings, and many watermelon growers are experiencing many errors in the transfer. When will the watermelon plant be the best? What needs attention
Watermelon growth characteristics
Whatever species of watermelon, it is always impossible to separate it from its own characteristics。
1. The watermelon is hot and extremely intolerant, growing slowly at 15°c, stopping at 10°c and suffering from cold at 5°c
2. The water is good, but it is not wet, and more than 12 hours inundation causes death
3. The light, which is sensitive to the reaction to the lack of light, is manifested in the growth of the syllabi, the lobes, their length, their light colour and their susceptibility to disease
4. It is desirable to select either deep-dwelling, sulfur pine fertilizing, well drained or sandy soil
Soil ph is not strictly required and can be grown in the range of 5-8 ph。
When will the watermelon plant be the best
Cultivation generally began before and after the spring festival, and in march it began to be replanted, with slight variations between regions. Strong seedlings have a direct impact on planting, flowering and production. However, lower temperatures, heavy rain and snow weather, and weaker light are detrimental to the growth of seedlings。
Temperature measures, such as the heating of light bulbs or electro-hot wires and the covering of mats in arches at night, make the temperature of the nursery not less than 10°c; increase the control of humidity in the shed, unmasking the small sheeting membrane, leaving the nutrient holding capacity at about 65% and the relative humidity of air in the shed at 50% - 60%. When nutrition is dry, it can be ploughed 1,000 times as much energy as it can, promoting rooting and growing。
The age of normal displacement of watermelon is four. Shrimp hours are slow due to small growth and poor adaptability and resistance to the outside world. At the same time, the age of the large saplings above the five leaves can cause adverse effects such as injury to the roots and to the outer skin of the stem and to the meds. 5-7 days before planting, seedlings can begin to be refined, the day ventilation time is extended, the temperature of the nursery is gradually reduced, and this can promote rooting, increase resistance to freezing and increase the survival of the seedlings following their transfer. Micro-replantation can be applied 800 times more than 1 to 2 days before planting, with fungicides, anti-facing leaves, boosting seedlings and increasing anti-frozenness。
Care should be taken in the nursery to prevent sudden fallout and detoxification, which can be prevented by drug injection and can be combined with microbicides and micro-healing。
Attention to watermelon seedlings
It is appropriate for 25 to 30 days of age, and neither early nor late。
Before properly calibrated seedlings can be adapted to the conditions of the daejeon, they need to be cooled, managed and treated with water, i. E., before they are ready for planting. The seedlings contribute to the ageing of watermelon seedlings and their adaptation and resilience。
In due course, the planting of watermelon seedlings should be carried out in the clear and continuous mornings, with as much temperature as possible, enabling the seedlings to rapidly grow new roots and to survive. Watermelons are prone to rooting or flatting if they are planted in low temperatures or subsequently experience continuous low temperatures. It is generally set at 10 cm and can be established at or above 15 °c。
Saplings are planted at depths appropriate for approximately one centimetre of the trophic soil surface buried in the soil, and are hotter and less ventilated in sub-soils, which can affect the growth of the watermelon and slow its growth. The marriage interface is at least 1 to 2 cm higher than the ground. The root causes of deep-rooted exposure to the soil of the sub-axis of the watermelon (echo) have rendered marriage meaningless。
The prevention and control of insect and pest plantings could be carried out once a day to prevent the death of watermelon seedlings from being fed by a hash of earth. At the same time, 79 per cent of the methyl tobuzin humid powder is sprayed with 800 times more fluid and 40 per cent of the oletoric concentrate is sprayed once to prevent pests and diseases and to avoid the problem of replanting the field。
