Matters needing attention in planting sweet pepper for sunshade and cooling control of diseases and insect pests

Many vegetable farmers still use flat bed cultivation to plant sweet pepper, but the root system of sweet pepper is weak. under the same conditions, the survival rate of flat bed cultivation is not as high as that of ridging cultivation. Therefore, it is recommended to use ridge planting, but the weather is hot, ridge planting, ridge should not be high, in case the high temperature on the ridge affects the growth of sweet pepper, small ridge is more appropriate (height 5-8 cm), so as to prevent sweet pepper from dying after watering. In addition, the practice of watering and so on before planting sweet pepper is unscientific. Watering before planting is easy to turn the soil and into thin mud, the soil is easy to solidify after drying, and the soil permeability is poor. Sweet pepper is easy to die, so it is recommended to plant before watering.

Sweet pepper planting

After planting sweet pepper, the temperature in the greenhouse was 32 ℃ in the daytime and 18 ℃ at night. But at present, if the sunshade measures are not taken, the temperature in the greenhouse is as high as 40 ℃ in sunny days, which is not suitable for the growth of sweet pepper, and the seedlings are burned by strong light, so sunshade net should be used to cool down. It should be noted that when using the sunshade net, do not disrelish trouble, it is best to leave a gap between the sunshade net and the greenhouse film, the cooling effect is better, and when there is no sun, do not cover the sunshade net, otherwise affect the growth of sweet pepper.

After planting, the death of sweet pepper was mainly caused by root disease, excessive watering and retting root caused by Rain Water irrigation shed.

1. The death of a tree caused by root disease. The main root diseases leading to the death of sweet pepper are pepper blight, root rot (Phytophthora root rot and Pythium root rot), bacterial wilt and so on. Root disease is a destructive disease of sweet pepper, once the disease occurs, the death of trees is serious, it is difficult to control. Prevention should be given priority to these diseases. It is suggested that before planting, 1 kg of Dorin and 1 kg of methyl topiramate per mu of sweet pepper should be sprinkled in the planting ditch and mixed with the soil to control the root diseases of sweet pepper.

two。 Dead trees caused by retting roots. The death caused by retting roots was caused by excessive watering at one time or after Rain Water irrigated shed. Generally speaking, sweet pepper planting water enough, slow seedling stage can not be watered, so as not to cause sweet pepper root disease caused by excessive soil moisture. Therefore, if the soil is particularly dry and needs watering after the planting of sweet pepper, it must be watered in the early morning or evening. In addition, the rainfall increased during the main flood season, but the root system of sweet pepper was weak, so the management of this period should prevent Rain Water from irrigating the shed. It is recommended that before heavy rain, close the vents of the greenhouse, especially the vents in front of the greenhouse, even if there is a light rain, so as to prevent Rain Water from entering and causing the sweet pepper to die. If the protection is improper, after Rain Water irrigates the shed, Rain Water will be discharged in time and watered once with clear water, combined with hoeing to increase the permeability of the soil. Under the necessary conditions, Purek can be applied to prevent sweet pepper root diseases.