Vegetable field cultivation
Urinary System Test,Urine Analysis System,Urine Calcium Test Strip,Urinalysis Equipments Changchun Medicon Technology Development Co., Ltd , http://www.jlmdk.com
June 18 13:23:21, 2019
1. Variety selection: Select mid-maturing varieties from September to October, 60 days of green stem heart, green stem willow leaf heart, yellow leaf center, big flower ball center dish. November - In late March, we chose late-maturing varieties to be cultivated in the protected area. There are varieties of Chixin 29, Zhucai 2nd, Guilin Twig Vegetable Heart, and March Vegetable Heart. Second, soil preparation and sowing: First of all to deepen the soil 25-30 centimeters deep, breaking up the clods, fine formation, combined with deep-turning can be applied to 3,000 kg of organic fertilizer Mushi, superphosphate 25 kg. Early spring, late autumn and autumn can be used flat rake, early summer to late autumn must use sorghum planting, beware of rain. Live broadcast: 150-180 grams per mu. Nursery: 400-500 grams per mu. About 1.2 centimeters deep sowing can be broadcast or broadcast. Third, the thinning and colonization: live seedlings in the seedlings before 3 leaves and time seedlings, 5 leaves in time Dingmiao. Nursery fields can be planted in time when they are 5 leaves. Fourth, the reasonable density: Early-maturing varieties of 32,000 acres of trees, row spacing 1613 cm. The number of late-maturing varieties was 1600-1700, with a spacing of 2216 cm. Fifth, field management: After the cabbage seedlings are planted or planted, the cultivars must be cultivated and weeded 1-2 times in the early growth stage to facilitate soil conservation and timely weeding. In combination with pouring seedling water and planting water, it is possible to apply ammonium sulfate 20 kg or urea 10 kg. In combination with pouring water, apply Sanyuan Compound Fertilizer with 25 kg/mu. In order to promote the growth of the side moss, the main stem is harvested about 5 days after the harvest, and then combined with water application of 15 kg of urea. VI. Pest Control: The major diseases of Brassica oleracea include downy mildew, black spot, soft rot and sclerotia. Pests include cabbage borers, cabbage caterpillars and aphids. It is necessary to conduct chemical control in a timely manner, and to comply with the variety of drug-free vegetable production and safe drug interval.