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早熟节瓜新品种‘新秀’ 被引量:1
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作者 何晓明 彭庆务 +5 位作者 刘文睿 谢大森 江彪 林毓娥 梁肇均 王敏 《园艺学报》 CAS CSCD 北大核心 2020年第S02期3000-3001,共2页
节瓜新品种‘新秀’为早熟杂交种。植株生长势较强,坐果能力强,商品瓜圆筒形,皮色深绿有光泽,头尾匀称无棱沟,单瓜质量300~400 g,瓜长15.0~16.0 cm,横径6.0~7.0 cm,肉厚约1.5cm,肉质嫩滑致密。从播种至初收,春季约73 d,秋季约54 d。丰... 节瓜新品种‘新秀’为早熟杂交种。植株生长势较强,坐果能力强,商品瓜圆筒形,皮色深绿有光泽,头尾匀称无棱沟,单瓜质量300~400 g,瓜长15.0~16.0 cm,横径6.0~7.0 cm,肉厚约1.5cm,肉质嫩滑致密。从播种至初收,春季约73 d,秋季约54 d。丰产性好,平均产量60 t·hm^-2。中抗枯萎病,抗逆性较强,适应性广,适合华南地区春秋季栽培。 展开更多
关键词 节瓜 早熟 品种
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GLOBAL TOPOLOGICAL PROPERLIES OF HOMOGENEOUS VECTOR FIELDS IN R 被引量:4
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作者 ZHANGX1NAN CHENLANSUN liangzhaojun 《Chinese Annals of Mathematics,Series B》 SCIE CSCD 1999年第2期185-194,共10页
In this paper, the authors prove that the flows of homogeneous vector field Q(x) at infinityare topologically equivalent to the flows of the tangent vector field QT(u) (u∈S2) on thesphere S2, and show the theorems fo... In this paper, the authors prove that the flows of homogeneous vector field Q(x) at infinityare topologically equivalent to the flows of the tangent vector field QT(u) (u∈S2) on thesphere S2, and show the theorems for the global topological classification of Q(x). They derivethe necessary and sufficient conditions for the global asymptotic stability and the boundednessof vector field Q(x), and obtain the criterion for the global topological equivalence of twohomogeneous vector fields. 展开更多
关键词 Tangent vector field Invariant cone Global topological equivalence
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