Non-pollution Cultivation of Summer Cabbage

Summer cabbage unpolluted cultivation: The main obstacle is that the higher the temperature is, the lower the growth requirement of cabbage is, and the adverse effect on the ball is beneficial to the spread of pests and weeds. It has become the key to affect pollution-free cultivation and increase yield. Technology which is as follows: First, the first free Cultivation should pest species with resistance (tolerance) selection of resistance (tolerance) pest resistance, heat resistance after 60 days, can be listed Xiawang planting cabbage, cabbage summer light, Zaofeng 55 other varieties. 2. Breeding disease-free seedlings Summer cabbage is usually raised in mid-June in mid-June, and full-grown seeds are selected for live seeding. 50 mu per mu are planted. After sowing, a 1.2-meter-high pergola is used and the shelter is enclosed with a shade net to achieve pest free. Nursery. After the emergence of seedlings, remove the seedlings, weak between the seedlings, 3-4 leaves when the prosthesis. III. Transplanting at the appropriate age When the seedling reaches the age of 30 days, it will be transplanted. At this time, the plant should be planted after 4 o'clock in the afternoon. When planting, use the non-polluting 10% water manure as the root water, and then fill the water the next morning. Once, strive to achieve full survival with a density of 3500-4000 strains/acre. 4. Apply 30 kg of compound fertilizer in the center of loquat before planting water and planting water at a reasonable rate. Steady height is “301” and 60 kg. 20 kg of urea will be applied after the transplanting of the living tree; 100 kg of enzyme will be used for granular fertilizer; , The number is the same as before, and the last fertilization is 20 days apart from the harvest period. When the seedlings are slightly wilting in the field, it is advisable to fill the clean water with no pollution in the morning and in the evening so as to keep the soil moist. In particular, the ball can not be short of water during the ball stage. Otherwise, loose leaf ball, poor commercial property, and low yield occur. In case of rainy weather, it is necessary to drain the water in time so that the rain will stop. Fifth, cultivating and weeding will benefit the weeds in summer, and the surface evaporation will be large. After the seedlings were planted, herbicide bialaphos 60-200 g was used. Can also be cultivator, cultivator in addition to net weeds, reduce surface evaporation, reduce the effects of diseases and insects. The cultivator should not injure the seedlings and roots. 6. Pests and pests that occur in pest control include: soft rot, black rot, aphids, cabbage caterpillars, and diamondback moths. Anti-soft rot: Rational rotation, cultivation of sorghum, application of organic fertilizer, extraction of diseased plants; incidence of neemectin 3000-4000 times or auxin 25 g/mu; copper ammonium agent 100 times liquid irrigated, 5-10 grams per strain, stop medication before the first 10 days (the same below). Anti-black rot: rotation. Keep the soil moist. The diseased plants were removed; and soaked for 72 minutes with 72% agricultural streptomycin 200 mg/kg; at the beginning of the disease, 72% of agricultural streptomycin or neomycin was used 4000 times or 1000 times of midotemicin 1000 times. Insect mites: remove field stubble leaves and weeds; set yellow plate coated waste engine oil to kill; use 20% matrine 2,000 times or 1% abamectin 1500-2000 times liquid. Plutella xylostella, Pieris rapae: Agricultural measures include: clean garden, reasonable rotation, black light trapping; with 1% avermectin 2000 times or 20% diflubenzuron No. 1 500-1000 times solution or 5% Supaibao 1500 Times or 2.5% dish hi 1000-1500 times liquid prevention; also available 50% phoxim or promethrin 3000 times liquid control. Summer cabbage harvesting is in August-September, which is a time when the market is going well. If the market is ready, the ball can be harvested as soon as the ball is tightly packed. If the market is stable, the ball will be harvested when it reaches the standard.