Disease prevention cultivation konjac high yield

Since the mid-1980s, the Chinese konjac has gradually grown from sporadic house front and rear housing to field planting. Generally, the initial yield of cultivated plants is acceptable. However, after a few years, the disease gradually increased. The konjac disease mainly consists of bacterial soft rot and white tinea. The lightest morbidity is 20% to 40%. Therefore, in order to make konjac grow successfully, the key is to promote disease prevention and high yield cultivation techniques. First, strictly choose the ground. Konjac is hi and warm, avoid high temperature; hi moist, avoid drought and waterlogging; hi shade, avoid direct sunlight; hi loose fertile sandy loam, avoid heavy clay and heavy sand. The most suitable planting area for konjac in our province is the mountainous area with an elevation of 600 to 1500 meters in the mountains of Xiangxi and Xiangdong. In the hills and mountains where the altitude is relatively low, it is appropriate to use the "five-side land" plantings such as hillside, forest side, house side, ground side, and stream side. In suitable areas, semi-yin, semi-yang, lee, moist, well-drained slopes, deep fertile soil, rich organic matter content, loose texture, and well ventilated slightly acidic or neutral sandy loam should be selected. Second, optimize the cultivation mode. Adapting to the local conditions and choosing the following cultivation mode is an effective way to cultivate high-yield konjac crops: 1. Vegetables - konjac - corn; 2. Young fruit trees - konjac - vegetables; 3. Woody herbs - konjac - vegetables; 4. Melon scaffolds Vegetables - konjac - vegetables; 5, shading nets or bamboo scaffolds and Other facilities shading cultivation. Third, fine soil preparation, reuse basal fertilizer. It is required that the soil be deep-turned more than 30 centimeters, and 50 kilograms of lime per acre should be applied in combination with plowing for soil disinfection. Konjac fertilization should be dominated by organic fertilizers, which account for more than 80% of total fertilization. In order to prevent the occurrence of diseases, organic fertilizers must be thoroughly fermented and decomposed, and 2,000-2,500 kilograms of rotting pigs, cattle pen manure, and chicken manure compost should be uniformly distributed after plowing. Then the land preparation is done. In our province, it is rainy in spring and summer, and it should be planted in a high-bay narrow-gauge, with a 1.5-meter compartment, a 1.2-meter-wide compartment, a 30-cm-wide trench, and a 25- to 30-cm trench depth. Fourth, strict selection and disinfection. The size of the konjac pods is a single weight of 100-500 grams. According to the specifications above, select high-quality bulbs with equal diameters, high-bulk bulbs, small and shallow buds, flat mouth, wide shoulders, full head buds, pink, full bulbs, smooth skin, and no disease or injury. Less than 100 grams of bulbs and rhizomes are used to propagate seed pods. Before sowing, one of the methods is selected for seed worm disinfection: 1. 10 million units of agricultural streptomycin + 50% carbendazim 100 gram 50 kg water, soaking for 1 hour. 2, 40% formalin 1:200 ~ 250 times solution soaking for 30 minutes. 3. Soak 0.05% potassium permanganate solution for 10 minutes. 4, 77% can be liquid soaked for 500 minutes. After being removed, they should be air-dried for 1 to 2 days before sowing. Fifth, rational close planting and timely planting. According to the size of the species, 1.2 meters wide buckwheat noodles, each planting 2 to 3 rows of konjac, sorghum border between 1 rows of corn, row spacing 40 to 60 cm, spacing 30 to 50 cm, planting konjac 2000 to 5000 per acre, with The amount of 600-800 kg per mu. Generally, the temperature rises to 15°C before and after the “Qingming” temperature. With the increase of altitude, the sowing period should be postponed and the high mountain areas with an altitude of 1300 to 1500 meters should be planted before and after the "Guiyu". When planting, the adjacent two rows are in the form of “goods”, and the seed pods cannot be in direct contact with the fertilizer. The thickness of the soil on the surface of the seed coat is 5 to 10 centimeters. The seed coat is less soiled and the seed coat is thicker to cover the soil.

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