关键词: 棉花, 棉花, 苗期, 氮效率, 产量性状, 纤维品质

Abstract: Pine needle is a kind of renewable natural resource which has rich nutrient content and can be used as raw aterial for organic compost. In order to understanding the pine needle compost application status and its potential value, in this study, the author chose the survey sites in Songgui Town, Heqing County, Dali Prefecture, and the survey covered 2450 farmer households in 82 communities of 10 villages. The survey found that, pine needle compost was widely applied in Heqing County, farmer households with compost accounted for 91.76% of the total households, and among which, farmer households with the pine needle compost accounted for 96.82% , the total compost reached 7493730 kg, the average household compost reached 3333.51 kg. Compost forms were diversified, pine needle compost and cover dung were the main forms. Compost control condition was poor, only 39.82% of the households added water in the composting process, only 15.70% of the households turned the pile, only 49.07% of the households had warming practice, and only 16.13% of the households conducted harmless treatments. Technical issues, including rapid degradation of pine needles, condition control of pine needle compost and reasonable formula of pine needle compost, should be addressed. Pine needle compost is a green organic fertilizer that widely recognized by farmers and has a huge potential value.