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广德县山北乡戈场林场板栗面积500多亩,已嫁接良种结果的有300亩。’93年小年产板栗4200多斤,’94年太年产板栗11000多斤,’95年小年通过科学经营管理年产量达到8000多斤,比前年小年产量提高近一倍。其做法是:(1)开盘垦复。在去年板栗采收后的九月下旬和今年的六月份结合施肥在树干周围进行垦复抚育,其规格是4.0×4.0米,深0.25—0.30米,改良土壤结构,增加有机质,使土壤疏松肥沃。(2)适时施肥。板栗采收后,栗树消耗大量养分,必须补充养分。于九月下旬每亩施基肥磷酸氢二铵15公斤,栗树开花时每亩追施尿素10公斤。(3)喷施增产灵。在授粉前期和果实速丰期各喷一次板栗增产灵,效果显著。(4)病虫害防治。冬天进行栗树修枝刮皮,除去病虫害寄生和越冬场所,于六月上中旬及时防治剪枝象鼻虫和铜绿金龟子。
Guangde County Shanbei Xiang Ge field chestnut area of 500 mu, grafted elite has been the result of 300 acres. ’93 annual output of 4,200 kilos of small chestnut,’ 94 annual output of chestnut more than 11,000 kilos too much, ’95 years of small-year scientific management by the annual output reached more than 8,000 kilos, compared with the previous year’s small annual output nearly doubled. Its approach is: (1) Open Reclamation. Last year in late chestnut harvest in late September and June of this year combined with fertilization in the trunk around the reclamation nursery, the size of 4.0 × 4.0 m, 0.25-0.30 m deep, improve soil structure, increase organic matter, the soil loose and fertile . (2) timely fertilization. Chestnut harvest, chestnut trees consume a lot of nutrients, nutrients must be added. In late September per acre basal fertilizer 15 kg diammonium phosphate, chestnut tree flowering topdressing urea 10 kg per acre. (3) Spraying Zeng Ling production. In the pre-pollination and fruiting fast fruit spray each chestnut yield Ling, the effect is remarkable. (4) pest control. Winter Chestnut tree pruning, remove pests and parasites and overwintering places, in mid-June on the timely control of cut weevil and copper chafer.