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为探讨玉米单交种制种高产新途径,1984年在开展大田玉米地膜覆盖栽培新技术多点示范的同时,县农牧业局和雪坪区农技站在海拔800米的雪家坪村二组阎德安制种田里(冬炕田)进行了地膜覆盖制种和露地制种效果比较试验,结果0.8亩地膜制种,收杂交种135.5公斤,亩合169.5公斤,比同等条件的0.4亩露地制种,亩产112.5公斤,增产50.7%。增加产值68.4元,扣去地膜投资30.40元(经验不足,用膜量过大,折亩用8公斤)后净增
In order to explore a new way to produce high yield of maize single cross-species, in 1984 to carry out multi-point demonstration of new technology of field maize mulching cultivation at the same time, County Agricultural and Animal Husbandry Bureau and Xueping District Agricultural Station at an altitude of 800 meters Xuejiaping Village Two sets Yan Dean farming (winter kangtian) were mulching and open field seeding effect comparison test, the results of 0.8 acres of plastic film production, hybrid income 135.5 kg, mu and 169.5 kg, 0.4 mu more than the same conditions exposed Seed production, 112.5 kg per mu, an increase of 50.7%. Increase the output value of 68.4 yuan, buckle to the plastic film investment 30.40 yuan (lack of experience, with a large amount of membrane, fold acres with 8 kg) net increase