摘要
西北黄土高原，光照丰富，雨热同期。实施旱作带田一膜两用技术，可增温２—５℃，节水３０—４０ｍｍ以上，调水７０％左右。热量利用率高达０．９８７，降水利用效率１５．１５ｋｇ／（ｍｍ·ｈｍ２），气候生产力利用指数０．４９。增产效益明显，变作物一年一作为一年两作，总产可达８２５０—９０００ｋｇ／ｈｍ２，比单作增产４５％以上。
Loess Plateau of northwest,illumination is abundant.Rain and heat is in a period.Microclimate of farmland have the obvious effect while a technology of plastic sheet mulching strip land with rain fed was carried out.The ground temperature increase 25℃,water saving 30-40mm. It is reached 70% or so the regulation of water with each other. Heat use efficiency is 0.99,precipitation is 15.15kg/(mm·hm2)the climate produce potential exponent is 0.49.The increase produce have the obvious effect changing one into two cultivation a year.Total output attained 8250-9000kg/hm2,increased yield over 45%comparision with the monocultivation.
出处
《气象学报》
CSCD
北大核心
1996年第4期508-512,共5页
Acta Meteorologica Sinica
关键词
水热效应
增产效益
旱作带
农田
地膜
小麦
rain fed stripe land, plastic sheet mulching, water-heat effect, increase yield benefit
