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在我省扬州地区存在着一种类似徐淮地区“干热风”的“高温逼熟”天气.即在小麦接近成熟的时候,日最高气温(大于30℃)持续两天以上,相对湿度一天内可低至30—40%,风力达2—4级,逼迫小麦早熟,结果使小麦千粒重降低,产量受到一定的影响.但在农田林网的保护下夏熟作物就可以避免这种灾害的发生.据康立新等人报道,有林网防护的农田,小麦平均增产2.3—5.0%,元麦平均增产5.3%,油菜平均增产3.4—5.9%,并且小麦和油菜的品质都有不同程度提高.本文拟以1982年观测结果,对林网网格内影响夏熟作物产量的水热条件进行探讨.一、观测地的基本情况观测地设在江都县东汇乡鞠家村,位于北纬32.27,东经119°34′,地势平坦,土壤肥沃,气候温和湿润,属稻、麦两熟地区.
In the Yangzhou area of our province, there is a kind of “high-temperature ripening” weather similar to the “hot and dry wind” in the Xuhuai area, that is, when the wheat is approaching maturity, the daily maximum temperature (more than 30 ℃) lasts for more than two days and the relative humidity is within one day Can be as low as 30-40%, wind up 2-4, forcing wheat precocity, the result of wheat grain weight decreased, the yield is affected to some extent.But under the protection of farmland forest net summer crops can avoid the occurrence of this disaster According to Kang Lixin et al reported that with Lin network protection of farmland, wheat increased 2.3-5.0% on average, the average wheat yield 5.3%, rape average yield of 3.4-5.9%, and the quality of wheat and rape have varying degrees of increase. This article intends to discuss the hydrothermal conditions affecting the summer crop production in the forest network with the observation results in 1982. I. The basic situation of the observation site The observation site is located in Jujiacun, Donghui Township, Jiangdu County, located at 32.27 N and the longitude 119 ° 34 ’, flat, fertile soil, mild climate, is a rice, wheat two ripe areas.