Huguan County of Changzhi City, Shanxi Province, is a typical dry stone mountainous area with serious water shortages. In recent years, the county’s farmers, following the guidance of agricultural technicians, have followed the laws of nature, aiming at market gaps, playing time lags, and planting late seeds in dry land. Tomatoes, sowing time than water to delay the tomatoes a month, clever use of natural precipitation, catch the vegetable market off-season harvest, to obtain good economic benefits, an acre of dry tomatoes per mu are more than 5,000 kg, can earn 5,000 yuan, good also Up to 7,000 yuan. The technique of sowing tomatoes on dry land requires the establishment of six off: site selection based on the site conditions for planting in the area, selecting lee, sunny, unpolluted, deep ditch, under-wet, and hilly dry land where tomatoes have not been grown in recent years. The best soil quality is loamy soil, so that it can achieve the effect of protecting the rain and meet the physiological needs of tomato growth, and can also avoid the adverse effects of early frost. Because of the drought and lack of rain in Huguan County, the selection of varieties must be based on the selection of varieties, and must use good varieties with strong drought resistance, high yield, wide applicability, and strong disease resistance. At the same time pay attention to the variety of goods, such as good taste, bright color, resistance to storage and transportation. Such as Zhongza No. 9, Chinese vegetable No. 6, Maofen 802, Jin tomato 908 and other new varieties. During the planting period, the dry sowing of the tomatoes during the late period of sowing depends on natural rainfall to supply water, and timely planting is very important. Yangshuo nursery is generally conducted in early April. The seedling period must be controlled and promoted. Strong seedlings should be planted. Planting can be carried out at the end of May and early June, and interplanting or replanting fields can be postponed to mid-to-late planting. The number of planting acres is about 3000-3500, with a large row spacing of 60-70 cm, a small row spacing of 40-50 cm, a 30-40 cm spacing, and controlling the growth of tomatoes at the end of August at the beginning of September to ensure that the growth and development period can be utilized. With sufficient rainfall in the natural world, picking happens to be in the low season for tomatoes. The amount of fertilizer used to fertilize tomatoes in late dry land must account for more than 85% of the total amount of fertilizer, and a reasonable formula should be adopted. The absorption of N, P and K in tomatoes is the most K, followed by N, P is the lowest, so the base fertilizer is generally To high-quality farmyard fertilizer 5000 kilograms, ammonium bicarbonate 50 kilograms, superphosphate 50 kilograms, plant ash more than 100 kilograms to meet the nutritional needs of tomato growth. The cultivation of the tomato seedlings covered with dry film on the dry land uses a two-line cultivation mode. The film should grasp the principle of “the rain is not the same, the time is not the same as the rainâ€, and the film can increase the temperature, protect the rice, and improve the field. The role of the microclimate. Management is one of the timely pruning: generally take a single pole pruning method, the timely removal of the lateral branches between the leaves. When the first flower is in fruit, it should be scaffolded and tied with vines in time to top and go to the old leaves one month before the morning frost, in order to concentrate on attacking large fruits and promote high yields. The second is to loosen soil and fertilize: After planting seedlings, it is necessary to loosen the soil for seedlings, and carry out topdressing after stable in the first layer of fruit. Each manhole is applied with 2500 kg of excrement, plus 5 kg of urea. Layers chase a fat. The third is to do a good job of prevention and control of pests and diseases: priority is given to agricultural control, biological control and physical control. When using chemical pesticides, it is imperative to adhere to the use of pesticides in more than two ways, that is, to use less biopesticides, to use less chemical pesticides, to use more efficient non-toxic pesticides, to use less pesticides, and to use low-toxicity and low-residue pesticides. Poisonous pesticides. When pests and diseases occur, it is necessary to use pesticides scientifically and rationally, minimize the use of pesticides, improve the application techniques, and reduce pollution and residues. (Shanzhi City, Shanxi Guoshu Station Li Sufang Liu Jianjun)
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