Snowstorm in the South after the rape field management techniques


In the spring of 034 an O12008, as of February 14, South of Yangtze River area hit by different degrees of rape five times disastrous heavy snowfall, snow depth of 40 cm, long duration of up to 30d, cause of rape 50 years of the most serious cold snow, frost and waterlogging, some early sprouts have all been frozen rapeseed destroyed by bending sprouts bud break (Figure 1), an upper class jerk seedling petiole more pressure off the snow, severe mechanical damage; II seedling leaf base cold wilting yellow (Figure 2); three types of seedlings and roots of the long-term waterlogging cold so that some weak seedling death. Impairment of work for the good job disaster, disaster recovery rapeseed production for a good situation, immediate post-disaster field to strengthen the management, the author provides the following relevant technical measures. Figure 1 rapeseed sprouts broken by snow pressure cold and wilting leaves 2 1 rape for disaster, guidance according to the first, second, l damage to a class of specific growth of the seedlings affected to varying degrees, with different management techniques to guide publicity measures for scientific management, Et injured early recovery for the growth function of rape. 2 Sewer Drain, reduce waterlogging when the snow continued to 7d and will continue to stretch, ten soil water saturation, there are mountains in author Qi Wang (1950), male, Anhui Nanling, senior agronomist, research in crop cultivation and technology promotion Received 2008-04-02 stagnant water should be checked against the wind field in time trek can be discharged,polo outlet online, reduced soil moisture, reduce waterlogging hazard rape roots, to ensure normal growth of roots, to avoid rot Simiao. 3 removal of frozen sprouts, leaves and snow melting cleaning, choose sunny immediate removal of the bud was frozen to death, to avoid rot infected wound,moncler sale, a general reservation sprouts crop 10-15cm, sprouts on a stalk 3-4 axillary retained the benefit of new shoots early growth and branching, while removal of the base of the cold and withered leaves; for two, three seedlings were frozen to death leaves and dead trees should be promptly removed and cleaned out the fields outside, to avoid the steep left in fields and produce bad disease spreading. 4 obstruct the root earth, solid roots early dry soil moisture to be fine in time cultivating, weeding (or chemical weed control),abercrombie and fitch canada, earth obstruct the root, in order to facilitate solid roots loose soil moisture, and promote rapid recovery of root growth of rape. 5 of applied fertilizer, Boron Abstract plots of frozen sprouts are to promote the sprouts in time of applied fertilizer, fertilizing, or as the case of urea 75-150kg/hm, to facilitate the promotion of early-onset branches: on the second and three types of plots, as the case may be affected urea 75-120kg/hm for dressing up to promote early resumption of growth; to be fine after bolting rape generally timely boron foliar spray, spraying 0.1% a 0.2% The boron solution 750kg/hm about conditional amount of applied potassium chloride can 37.5-45kg/hm,canada goose norge, but also the root outside the spraying amount of potassium dihydrogen phosphate for fertilizer, and enhance plant cold tolerance to promote beefy buds, enrich pollen, sturdy grain, increase grain weight, improve yield and quality. 6 strengthen supervision, prevention and control of pest disaster rape the ground, some have suffered varying degrees of frostbite, rape easier than normal sense of disease or pests such as aphids suffered harm,abercrombie fitch outlet, plant protection department and village plant protection should be immediately strengthened to monitor the observation of rape pests , accurate and timely forecasts of the occurrence of Sclerotinia terraces, timely spraying of carbendazim, thiophanate-methyl, on the occurrence of downy mildew in the plots to timely spraying mancozeb and other prevention and control; the field of aphid occurrence block, timely spraying of imidacloprid, pirimicarb and other prevention and control, increase production for post-rape.