The seedling raising time is short, it only takes 25 days from cutting to transplanting; the seedlings bred by collateral cuttings have strong roots, strong growth vigor and stress resistance, and good yield; collateral cuttings are asexual reproduction, w

1. Temperature. Celery is a low-temperature-tolerant vegetable, with a minimum tolerance of -7°C to -10°C, but its suitable growth temperature is 15°C-20°C, so we should master the principle of low temperature management. 2. Light. Celery is a

The important raw material for the production of nitro-feric acid, ammonium nitrate (referred to as ammonium nitrate), is a typical explosive material, which is flammable and explosive. It has been used in agricultural and compound fertilizer production. A group of enterprises represented by Tianji

After the tomato growth and development enter the flowering and fruiting period, the phenomenon of flower and fruit shedding often occurs to varying degrees, which brings disadvantages to the improvement of tomato yield and quality. Why does tomato fall in

In the production process, due to the improper application of fertilizers by many farmers, fertilizer damage has caused the quality of crops to deteriorate and yields are reduced. Therefore, sufficient attention should be paid. Causes of fertilizer damage

Potatoes like cold and cold. When planting mulched potatoes in the central and southern regions of Hebei, they must prepare the ground for sowing as soon as possible after the soil has been frozen in early spring, so that the entire growth process of potat

The height of the plastic film small arch shed is generally less than 1.5 meters, 13 meters wide, and the length is generally more than 10 meters. The small arch shed is easy to construct and the cost is low. After the cover is added, the effect of warming is not worse than that of a large greenhou

Avoid using plastic bags because the plastic bags are not air-tight. Under hypoxic conditions, the seeds undergo anaerobic respiration and produce a large amount of toxic substances, which can kill the embryos, or the moisture and heat generated by the res

After the temperature drops, the ventilation time of the shed will be shortened, and the closed shed time will be prolonged. Once the fertilizer is not applied properly, it is easy to cause fertilizer damage, such as root burning and air damage. Avoid usin

Answer: Chai Yan, a consultant from the Old Association of Science and Technology in Yangling Demonstration Zone and a professor at Northwest A&F University, said that before planting soybeans, first do a good job of seed selection and remove moldy see

Sweet potato roll leafworm, alias sweet potato wheat moth, is a Lepidoptera, moth family, mainly damage sweet potato, leeks, morning glory and other convolvulaceae plants. The larvae of sweet potato leaf roll insects infested the leaves after hatching, and the larvae were 4 years old. The action w

In the past maintenance of vegetable production, the vegetable farmer's habits put the attention on the conditions of improving the space of temperature, light, gas, etc., and the work of improving the soil environment, inventing a work that is conduc