leaf head

Tissue culture of apical buds and leaf sections of head lettuce(ⅰ)

结球莴苣顶芽及叶片组织培养（初报）

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The most wide spreading and serious diseases include northern leaf blight, southern leaf blight, head smut, stalk rot, ear rot, rhizoctonia sheath spot, take all, dwarf mosaic virus etc.

发生普遍危害严重的病害有大斑病、小斑病、丝黑穗病、青枯病、穗粒腐病、纹枯病、全蚀病、矮花叶病等。

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The earth gives fruit by herself; first the leaf, then the head, then the full grain.

地生五谷，是出于自然的。先发苗，后长穗，再后穗上结成饱满的子粒。

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The Growth and Leaf Head Formation in Brassica juncea var. capitata Bailey

结球芥菜的生长动态与叶球形成

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The fresh weights of leaf head was 48.2% of total plant fresh weight.

叶球的鲜样质量和干样质量分别占植株鲜样质量和干样质量的48.2%和48.8%，经济系数近0.5。

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NUMERICAL STUDY OF UNSTEADY TIP LEAKAGE FLOW AND HEAT TRANSFER IN A SQUEALER TIP BLADE Each of them had plastered a large lotus leaf on his head to keep off the midday sun.

凹槽叶顶非定常间隙泄漏流动和传热的数值研究一人摘了一片大荷叶顶在头上，抵挡正午的太阳。

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Leaf type head on the probe allows it to fit through small openings, so it is ideal measuring for the small opening temperature of dies, bearings, machinerys, etc.

薄片型探头的端部适合通过狭小缝隙，所以它是测量模具、轴承以及机械设备狭缝温度的理想工具。

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In the root, stem, leaf, sheath and head, the enzyme band of head was the most, and POX activity was the highest, the enzyme band of stem was the least and POX activity of sheath was the most weakest.

根、茎、叶、鞘和穗，以穗的酶带最多，酶活性最强，以茎的酶带最少，叶鞘的酶活性最弱。

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The leaf head of the variety is crispy and good quality. The content of Vc is 73.6% higher than that of control. Crude fiber and total acid were lower 21.2% and 36.6% than that of control respectively.

质地脆嫩，品质优良，Vc含量比对照增加73.6%，粗纤维和总酸分别比对照低21.2%和36.6%，软叶率比对照增加17.3%；

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There were four stages ( germination, seedling, leaf growth and leaf head formation) during head mustard growth from sowing to harvest.

结球芥菜自播种至叶球采收可分为发芽、幼苗、叶簇生长和叶球形成4个生长期。

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The inheritance mechanism of self-incompatibility of the Green Leaf Flat Head, King Zao Sheng, DT 409 and Danish Ball Head have been studied preliminarily.

对青种平头、金早生、DT409和丹京早熟四个品种自交不亲和性的遗传机制进行了初步的研究。

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