Vegetables, as a common green leaf vegetable, are rich in many nutrients and are popular with consumers. An understanding of the characteristics of different varieties, proper planting techniques and effective pest control methods are important for improving the yield and quality of pickles。
I. Varieties of pickles
(i) green
The leaves are green, more heat resistant and growing fast. It is common in shanghai for white rice and willows in guangzhou。
(ii) red
Leaf is purple, softer and more valuable. It's like the zhongqing red robes, the hangzhou red round leaves。
(iii) colours
The edge of the leaves is green and the purple red near the veins have a unique appearance. For example, spicy red rice。
Ii. The method of growing vegetables
(i) soil selection
Vegetables are more resilient, but are well served by lax, fertile and water-preserving soils。
(ii) seeding
Seed time
The seeds can be sowed from spring to autumn, and the right time will be chosen depending on the region and variety. Sowing
This may be done by sowing or broadcasting, with light and light cover of a sheet of soil。
(iii) field management
Water
Keep the soil wet but avoid water accumulation. During high summer temperatures, the number of waters poured increased. Fertilizing
The base weight is predominantly organic, with the timely application of nitrogen during growth。
(iv) collection
When the vegetables grow to a certain height, they can be collected according to market demand. Usually after sowing 30-50 days or so。
Iii. Pest management
(i) diseases
Rusty
Symptoms: the back of the leaf produces a pile of white herpes。
Method of prevention and treatment: rational rotation, timely removal of leaves; spraying of agents such as mercuric manganese zinc at the beginning of the disease. Anthrax
Symptoms: circle or elliptical disease on leaves, central gray。
Prevention and treatment measures: strengthening field management to increase resistance to strains; spraying of pharmaceutical agents, such as meshamine, at the beginning of the disease。
(ii) pests
Aphids
Symptoms: ingestion of juice, causing leaf curls and yellow hair。
Methods of prevention: lasagna with cedars or sprayed with herbicides such as amphibian. Beet night moths
Symptoms: the larvae eats leaves, causing defects。
Measures to combat: insects are lured into pests using black light lamps, and larvae are treated with preparations such as chloromethamphetamine。
