It is not possible to combine with melon crops, such as cucumbers, melons and melons, in order to prevent atrophy, either seven to eight years in dry fields, five to six years in dry water and three to four years in water fields. It is desirable to select a melon field with a high level of topography, a sunwind, a deep layer of soil, laxity, good drainage and, preferably, water. (c) to improve the compounding index in terms of tailor-made arrangements. My suburbs, corn, sweet potatoes, grains, soybeans, etc. The peanuts were used with great care. The use of a condom should be a reasonable combination, such as spinach, carrots, oil, potatoes, etc. There have been developments in cotton fields and wheat fields, as well as in wheat summer broadcasts, with over 1,000 acres broadcast in wuqing county, and in small-scale villages, where many harvests can be planted using wide-spreading, making full use of land, light heat and increasing economic efficiency. Ii. Fertilizers are applied in the whole area (i) throughout the spring, with a pre-winter guacamole plowing 20-30 cm deep, with no dredges, freezing tan, favouring the weathered soil, freezing pests and poaching snow. In the early spring, when appropriate, you can use the swirling. It is then planned to dig a guacamole (also known as the guacamole). Digging can thicken the living layer of the earth, facilitate the extension of the roots and allow for concentrated application of base fertilization. Guadeloupe's going for something, north and south. At a distance of 1. 6 to 1. 8 metres, digs 50 to 60 centimetres wide, 40 centimetres deep, puts 20 centimetres of cousins south of the ditch and dish north. (ii) scrutinizing watermelon leaves, with short reproductive periods, high productivity and high fertility. It is necessary to apply base fat to provide basic nutrients for the entire reproductive life of the watermelon. In particular, membrane cultivation, inconvenient pursuit of obesity, such as low base weight, can lead to early plant failure and affect only physical development. Based on long-acting organic fertilizers, the base fertilizer is added to the appropriate amount of fertilizer. 1. Fertilization is determined by soil fertility. High-quality school fattening of 3,000-500 kg or 150-200 kg of pie per acre can be applied in lower and middle places. High-fertility plots, capable of fertilization of 2000-2500 kg or 100 kg of bread. The soil of our suburbs is generally short of phosphorus and the soil of sand lacks potassium, which should be increased by 50-70 kg per acre and 1015 kg per acre. 2. Basic fertilization. Largely in the form of large amounts of coarse fertilizer, most of which can be removed before winter farming, leaving a small fraction of the high-quality cortex and all the pie fat mixed to fermentation, concentrated in gutter. Part of the topsoil on the southern side of the gutter is mixed with fatty and then the rest of the topsoil is flat. (iii) plumbing to facilitate water, covering, management, etc., needs to be in an appropriate form. 1 , 2 , 2 , 2 , 3 , 4 , 4 , 4 , 3 , 2 , 4 , 4 , and 4 , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , , selection and seed handling (i) selection of good varieties is a prerequisite for high-yield quality and currently suitable for production in our city are the following: early and medium-finished types of zheng zheng zheng, no. 7, double star ll, no. 1, etc.; medium- and medium-finished types of zhong zhong, no. 3, golden flower (pz), no. 2 in the crown dragon series; late-cooked types of new red and new red treasure series zhong zhong zhong zhong zing zhong zing, etc., may be selected on the basis of the zheng zheng zheng zheng zheng zheng zheng zheng zheng zheng zhong zhong zhong zhong zhong zhong zhong zhong zhong, no. 1 in hua xian zhong zhong zhong zhong, etc. The selected species are also to be strictly incorrigible, and test the granules, the pellets, the mold seeds, for the seed to grow. (ii) sterilization, which used to be common in the past, is not suitable for use because of poor temperature timing. The following methods are applied: at 55°c, water is warm (two times cool), 5-6 times the amount of seeds, 30 minutes of immersion, immersion and natural cooling. It's not possible to use aluminum basin, so that water temperatures don't go too fast to disinfect. In 30 minutes, the cold water bathing at 20°c will be replaced, and in the case of two hours of cold water, two hours of seed or dry seed of cold water will be sterilised by a warm soup. (l) after 100 times immersion in the ff, the liquid was washed clean several times after 10 minutes. It can kill carcasses and anthrax. (2) 10% of the sodium phosphate solution is impregnated for 20 minutes to kill the virus. (3) two per cent and four per cent of bleached powder is impregnated for 30 minutes to kill the fungus. (iii) leaching seed sprouts with disinfected seed, immersed with water at 20°c for 6112 hours (depending on the thick skin), rubbed with towels, wrapped in wet cloth, and sprung at 25-30°c. It usually goes through the one or two-day seed "lose white". Temperature is regularly checked. The water temperature is 30°c when water is sprouts; electro-heat beds, earth incubators, pyrotechnics can be used for the sprouts. It is safer and more reliable to carry a person in close proximity with human temperature. Seeds are “low white” not exceeding 3 mm as the standard, with excessive effects on sowing. Some of the seeds up to 2-3 mm, which are first “low white”, should be picked up in time and placed at room temperature of 15°c, which can inhibit extension and make them robust. We can sow 80% and 90% of the seeds. (i) during seeding. The standard for field seeding is 10 cm and temperatures are stable above 15 cm. The final frost is over when the seeding takes place and the planting period is safe. My suburbs are usually on april 15th, 20th. If it's a membrane lid, it can be broadcast 2-3 days late. In the event of an emptiness of a membrane ditch, the seedlings reach the true two and grow under the membrane, with a spread half a month earlier than the open ground. If the membrane is covered with a small bow shed, planting may be desirable in mid-march and late. The seedlings were planted in early march and planted with small bow sheds in early april. The wheat crop is suitable for may 20-25. On july 15-30, it was appropriate to broadcast the summer in order to avoid the rainy season. (ii) cultivation density of watermelons, depending on the type, method of cultivation, level of management, soil fertility, etc. There are only 300-40 per acre, with a heavy capacity of 2,000. The determination of density can be considered in terms of the following: it's a strong medium-crop, about 800 plants per acre. A melon-type late-literate variety can grow 500-600 species/acre. Based on the manner in which the cultivation takes place:
