Recently, a friend of Jiangnong reported that the current ginger production is affected by adverse weather conditions such as high temperature and persistent drought, and the phenomenon of yellow stems and leaves, curled hearts, and slow growth occurred to varying degrees. If no practical management measures are taken, this year's ginger production will suffer serious losses. Below, introduce the management measures for this extreme weather, for reference of Jiangnong friends. First, scientific watering Ginger hi moist, not drought tolerant, generally shallow hoe loose soil after water is appropriate. In case of drought, the number of waterings should be increased, but flooding should not be allowed. August and September are the critical period for the growth of ginger rhizomes, and the demand for water is obviously increased. However, since July, many areas in our province have continued to suffer from high temperature and drought, and the effective precipitation has decreased significantly compared with the same period of previous years, which has a great impact on ginger production. For this reason, it is necessary to focus on watering and drought relief at the present time. It is advisable to water once for 7-10 days, and sand land should be poured one time in about 5 days. Watering time is appropriate in the morning and evening. Do not water at noon. Second, formula fertilization Ginger grows for a long period of time and requires a large amount of fertilizer. In particular, the amount of fertilizer needed in the middle and late growth period accounts for about 80% of the entire growth period. After the beginning of autumn, the combination of removing weeds or removing ginger sheds for top dressing requires sufficient fertilizer, complete nutrition, and lasting fertilizer effect. In the side of the ginger seedlings, a fertilization ditch is opened at a distance of 15-20 cm from the base of the plant, and the depth is 10 cm. The per mu cooked bean cake is 70-80 kg or the dried manure is dried 500 kg, plus 30 kg of ternary compound fertilizer, and the fertilizer is evenly distributed. Spread the soil after fertilizing the ditch and then drench it. In mid-September, when the ginger seedlings had 6-8 tillers, the rapid expansion of rhizomes at this time was possible. The top dressing on the one hand promoted the lush stems and leaves, the rapid expansion of ginger rhizomes; on the other hand can prevent defertilization in the late growth period and lead to premature failure of stems and leaves, affecting yield, can be applied 4-5 kg ​​of M fertilizer. Combined with topdressing, timely supplement of boron fertilizer, zinc fertilizer and other micro-fertilizers, generally 2 acres of zinc topdressing zinc sulfate, borax 1 kg, has an important role in improving ginger production and quality. Third, many times soil Because ginger roots need dark environmental conditions, they should be soiled many times. In the later stage of growth, it is usually 2-3 times for the soil to be cultivated. The first time the soil is cultivated in the top dressing, it is advisable to cover the farmyard soil with soil. It should not be too thick. After 15 days, the second and third earths were cultivated. Finally, the earth was to be earthworms and the roots could not be exposed on the ground. Fourth, disease prevention and pest control Ginger disease is a devastating disease in the production of ginger, and it is also a major factor affecting ginger production. Should be based on comprehensive prevention and control, can be used for crop rotation, seed dressing, spreading fungicide, drainage and other measures to prevent flooding. If a diseased plant is found, it should be removed in a timely manner, and lime should be used as a standard. After the ginger is harvested, it should be Deep soil treatment. The main pests are Spodoptera exigua (Hübner) and thrips, etc., and pests should be regularly observed in a timely manner. Can be used imidacloprid, avermectin spray control, once every 7-10 days control. Fifth, timely harvest In the central region of our province, the best harvest period for growing ginger in open field is from October 20 to 25; the southern region of our province can be delayed by 3-5 days; Tangshan, Qinhuangdao and other eastern regions can be harvested one week earlier. Must grasp the appropriate timing of harvest, must not be harvested prematurely, in order to facilitate the return of storage and nutrients, when harvesting, retain about 3 cm of stems, in order to promote nutrient reflux, increase production.
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