棉花高密度矮化栽培高产优质的潜力

The Potential of Cotton Highyield and Good Quality by High-density and Dwarftion Cultivation

在矮化的前提下，根据产站指标，利用缩节安分棉花生育期问进行２～５次化调，棉株叶门变绿、变厚，株则紧凑，迎风透光条件改善，协调棉株营养牛长和生殖生长的矛盾；则消密度栽培，收获株数南疆为１３．５～１８万株／ｈｍ２，北疆１８～２４万株／ｈｍ２，采用大群体以密取胜来提高难产。小个体，减少单株结铃数，每株保铃６个左右，使这部分棉铃均着生在１～６果技第一铃位上，来提高棉纤维品质；根据产且指标对肥料的需要，科学施肥；综合防治病虫具。中产皮棉即叶达到１５００ｋｇ／ｈｍ２。

Lindcrlying dwarftion according to yield index,chewical contiol using two to five tines DPC during cotton gzowth peziod can make leaves become greenes and thicder,which also belong to the close type of plant,aswell as can improve rendilatiow and photic condifiow,coordinatc contradiction between vegetative gzowfh and the repzoductive.High-desity caltivation can harvast 13.5～18 x 104individual/hm2in south of Xinjiang.Whilc18￣24 x 104individual/hm2in the north.We increased unit yield by high dsnsity for large Population,as for individual small plant,we decrease the number of cotton bolls by keeping about six bolls a plant and making those cotton hbolls grow in ist boll position for the ist to sixth fruitbranchs, by using which we can improve fibes quality.If fertiliger is scientificly used,according to the need or Priduct index,and the diseases and insect pest is courprehcasionely coutroled,the unit yield of ginned coffon will reach 1500kg/hm2.