Environmental Control of Lily cultivation in greenhouse

Lily cultivation, in addition to high quality bulbs, but also in the whole process of lily growth, according to different varieties of growth environment requirements for strict control, in order to produce better plant type, higher quality lily products. If the conditions are not well controlled, it will not only affect the plant type of lily, but also affect the plant growth in severe cases, and even fail to bloom normally. The following is a brief introduction to the environmental control in lily cultivation process according to the requirements of lily cultivation.

1. greenhouse

A good growth environment can ensure the normal growth of lily. Dutch lily cultivation generally has a suitable greenhouse, and has a variety of facilities that can maintain the greenhouse in suitable climatic conditions (light, temperature, ventilation, air circulation). Because of the different climatic conditions and cultivation levels in domestic lily cultivation, greenhouses also have diversity, such as greenhouses or multi-span greenhouses, and many places can also be directly planted in the open air when the climate is right. All localities should be flexible according to climatic conditions and economic conditions, but if cooling or shading is required in summer and cooling or lighting is required in winter, caution should be exercised, and at least basic heating or cooling facilities and appropriate irrigation facilities must be equipped.

2. temperature

Good root systems are very important in order to obtain high quality products. During the first 1/3 growth cycle or at least before root growth, the optimum temperature is 12~13℃, which is beneficial to root growth of lily stem. Too low temperature will unnecessarily prolong the growth cycle, while temperature higher than 15℃ will lead to poor rooting and product quality decline. After the temperature gradually increased, for different strains of lily, the appropriate temperature for its growth is also different.

High temperature and drought will cause lily stem to shorten and flower bud quantity to decrease; high temperature and high humidity will cause lily stem to be soft and not hard, leaf thinning; low temperature will delay plant growth and lengthen growth period; drastic changes in temperature and humidity will produce stiff flower bud, increase the ratio of cracked bud and scorched leaf, so the whole process of lily requires to maintain appropriate temperature and humidity, and the change is moderate. Ventilation can reduce the temperature and humidity under high temperature and humidity conditions, make plants grow strong and reduce pests.

Heating systems are often used to control the temperature of greenhouses or greenhouses in winter or cold areas. There are many heating methods, such as fuel oil (coal) heater heating, hot water pipe heating, steam pipe heating, etc. The power of the heating system needs about 220 watts per cubic meter per hour, and all places should be selected according to specific conditions.

Using hot water pipeline heating, heat distribution is more uniform, operation safety is good, but pipeline heating is often slower.

It is convenient to use oil-fired hot air stove to heat, but the heat distribution of the system must be ensured evenly. In addition, there should be a suitable outlet so that the combustion gases can be freely exhausted. If combustion gases accumulate in greenhouses, ethylene and nitric oxide gases can cause lily buds to drop or grow poorly. Heating systems such as pipes or hoses (maximum temperature 40 ° C) can also be installed under the bed.