What kind of attention should be paid when planting autumn lettuce?
First, land preparation and planting The land for growing autumn lettuce requires fertile soil, strong water retention and fertility, and fine farming. Combining farmland per acre applies 3 to 5 farmyard fertilizers, 30 to 50 kg of compound fertilizer with high nitrogen and low phosphorus and potassium, 20 to 30 kg of biological bacteria fertilizer, and 200 to 400 grams of trace elements. Do it flat. Then grind with a hoe. The distance between the burrows (line spacing) is 35-40 cm, and about 5,000 burrow holes are located. When the autumn lettuce shoots grow to 5 to 6 true leaves, they can be planted. When planting, choose a cloudy or rainy day, which is conducive to rapid seedling growth and improve the survival rate. Transplanting as far as possible to make the seedling erect, avoid skew, timely watering after planting. Second, field management After watering the saplings, when the ground is dry, in the principle of deep and shallow depths, the plan is repeated twice. It should be noted that in the event of planning, a tripling seedling is to be planted in time to correct it, because it will produce bent bamboo shoots, commonly known as sticks and bamboo shoots, which will greatly reduce the commercial nature of lettuce, thereby affecting income. In case of heavy rainfall, it should be planned in time after the rain is fine. Lettuce likes moist soil, so it should be properly watered to keep the soil moist. About 15 days after the asparagus lettuce planting and about 10 days combined with watering, per acre red pepper 20 grams and 20 kg of ammonium nitrate plus 1 kg of potassium dihydrogen phosphate. Third, timely harvest Autumn lettuce harvesting is too early, affecting yield and yield, and harvesting will result in hollow convulsions too late and should be harvested when the outer edge leaves are flush with the growing point before the convulsions. IV. Pest Control Autumn lettuce disease mainly includes downy mildew, soft rot, black rot and sclerotia. In the early stage of disease, 72.2% of Proploycin 1000 times or 70% of Antai 600 times is used to control downy mildew, spraying 3 to 4 times. The soft rot and black rot were sprayed with 30% nitro humic acid copper 500 times solution or 14% urea copper water solution 300 times, and sprayed twice at intervals of 7 to 10 days. Sclerotinia was sprayed with 50% nongrilled 1000 times solution or 50% proploine 1000 times solution and sprayed twice in intervals of 7-10 days. Autumn Lettuce insect pests are mainly Liriomyza sativae, which can be controlled by 40% Wanling 1300 times spray. Poly-Lok Clip Open Removers,Clip Open Removers,Open Clip Removers,Clip Removers Qingdao DMD Medical Technology Co., LTD , https://www.dmd-medical.com