Planting Technology Lists
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Cotton seed dressing gets twice the result with half the effort
Years of practice has proved that seed dressing at sowing date is one of the important measures to ensure the health of cotton seedlings, which can achieve the purpose of economically, safely, effectively controlling or reducing the damage of cotton seedling diseases, seedling aphids, underground pests and other diseases and pests, and get twice the result with half the effort. At present, the Qingming Festival has passed, and the cotton sowing work in the city has been carried out in an all-round way. Now this technique is briefly introduced as follows: 1. The selection of resistant and disease-tolerant varieties or sowing coated seeds can emerge early for 3-4 days and reduce the incidence of disease. 2. Mix with 75% nail
2019-01-15 -
Causes of Cotton abortion and Rescue measures
Cotton abortion occurs every year. The so-called abortion means that cotton loses the function of normal growth, that is, it only blossoms but does not bear peaches, or blossoms more than peaches. First of all, the reason is caused by climate factors, the second is the blind introduction of cotton varieties, and the second is that the cultivation means do not adapt to climate change. According to records, when the temperature exceeds 35 ℃, the pollen development is abnormal and can not pollinate normally, while the persistent drought aggravates the shedding of buds and bolls. In addition, in mid-August, some cotton areas have been overcast and rainy for a week, which will also make it difficult for cotton to bloom and pollinate normally.
2019-01-15 -
Cotton white mildew
The symptoms occurred in the middle and later stages of cotton growth in each cotton area. The white spot with a diameter of 3-4mm appeared at the beginning of a single leaf vein network, and then became irregular polygonal. The disease spot was light green to yellowish green on the front of the leaf, and there were many white frosty conidiophores and conidia on the back of the leaf. Pathogen RamulariaareolaAtk. It is called white spot column sporulation or cotton column sporulation, which belongs to the subphylum fungus. The conidiophores are colorless, protruding in bundles from the stomata on the back of the leaves, mostly branched at the base, with a dentate tip
2019-01-15 -
The selection of Phalaenopsis
How to choose an ideal Phalaenopsis? Generally speaking, the leaves are bright in color, with thickness, many leaves, and neatly arranged leaves. It also depends on whether the leaves are stiff and upward, because only in this way can we show whether its vitality is exuberant. If possible, it is best to gently pull out the flower root to have a look, the root is fresh, or there are sprouting new roots, the vitality of this kind of flower is reassuring. Secondly, look at the flowers, first look at the number of flowers, Phalaenopsis is graded according to the number of flowers, the more flowers, the better. The bud is between 8 and 11.
2019-01-15 -
Winter Management of Phalaenopsis
Phalaenopsis needs to be cultivated in high temperature greenhouse in winter in north China. In order to create suitable environmental conditions for the growth of Phalaenopsis, the following aspects should be done well: First, temperature: the appropriate temperature for the growth of Phalaenopsis is 25℃-30℃ during the day, more than 32℃, unfavorable for growth and flower bud differentiation, 18℃-20℃ at night, not lower than 15℃, if it has been maintained at a higher temperature, it is conducive to its flowering. Humidity: Phalaenopsis likes higher air humidity and should be kept at 70%-8 during growth.
2019-01-15 -
Flowering technique of Phalaenopsis
In order to provide Phalaenopsis potted flowers to the market during New Year's Day and Spring Festival, Shandong Rizhao City Garden Bureau and Rizhao Agricultural High-tech demonstration Park conducted a three-year research on Phalaenopsis flowering technology, and systematically summed up a set of technical regulations. The production facility adopts the improved solar greenhouse, which is equipped with necessary temperature and humidity control equipment such as fan coil heating, fan wet curtain and external shading, cooling and humidification. Technical measures temperature control (1) Day and night temperature: during vegetative growth, the day temperature is controlled between 26 ℃ and 28 ℃.
2019-01-15 -
Phalaenopsis concave spot
The main symptoms occur on the lobar surface at the beginning of the disease.
2019-01-15 -
Key points of Phalaenopsis (Spring and Summer) Family Care
When the flowering plants are purchased in spring (March-May), the temperature becomes higher in spring, which is a good time to cultivate plants. However, the plants sold on the market during this period were cultivated in production greenhouses with the lowest temperature above 20 ℃ throughout the winter, so the plants were not very hardy. After purchasing the plant should be domesticated, the method is to put the pot in the lowest temperature at dawn above 10 ℃, if there is a hotbed or air-conditioned room, the pot on the center, and then slightly heated to protect. Adapting to the environment
2019-01-15 -
Guangdong successfully bred "Shannong Phoenix" Phalaenopsis
Shantou Agricultural Science Research Institute (postcode: 515021, telephone: 0754-8101302) selected a new Phalaenopsis variety "Shannong Phoenix", which recently passed the variety approval of Guangdong Province. This variety has a correct flower shape, red flowers, bright color, red lines on petals and sepals, white background at the base of petals, a few red spray spots, sharp contrast, deep orange-red lips. The horizontal diameter of flowers is about 9.8 cm, the vertical diameter is about 8.0 cm, the number of flowers is 7-8, and the distance is about 3.6 cm. Pedicel 60-70 cm long
2019-01-15 -
On the technique of Phalaenopsis oversummer
1. Measures: the oversummer of Phalaenopsis is mainly a cooling problem, and the following measures should be taken: ① plus double-layer shading net to reduce light, which can achieve a good cooling effect (2 ℃ ~ 4 ℃). ② ground sprinkling and irrigation. The temperature is very high in summer, but the temperature of the water just pumped out of the well is very low, about 16 ℃. Therefore, the method of sprinkling or irrigation can play an obvious cooling effect. The cooling rate of ③ foliar spraying is the fastest, but the duration is the shortest. ④ ventilation. Every 5 on the wall
2019-01-15